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Definition
| an angle that measures less than 90 degrees |
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Definition
| 2 angles that share a ray as a side |
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Definition
| 2 rys that share an endpoint |
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Definition
| cuts an angle into 2 congruent parts. |
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Definition
| a triangle with 3 acute angles |
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Definition
| if 2 lines are cut by a transversal and the alternate interior angles are also congruent, then those 2 lines are parallel. |
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Definition
| if a pair of parallel lines are cut by a transversal, then the alternate interior angles are congruent. |
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Term
alternate interior angles
(AIA) |
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Definition
| 2 non adjacent angles in between 2 lines on opposite sides of the transversal. |
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Term
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Definition
| the triangles are congruent if 2 angles and a side not part of the triangle are congruent to the corresponding part of another triangle. |
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Term
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Definition
| the triangles are congruent if one included side of the triangle are congruent to 2 angles and the included side of the other triangle. |
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Term
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Definition
| the "if and only if" statement used when the conditional and the converse are true. |
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Term
| base of an isosceles triangle |
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Definition
| The thrid part, other than the legs is the base of a triangle(isosceles) |
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Term
| Base angles of an isosceles triangle |
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Definition
| the angles of the base in the isosceles triangle. |
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Term
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Definition
| 3 points on the same line, 2 points are always collinear |
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Term
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Definition
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Term
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Definition
| 4 more or more points on the same plane, 3 points are always coplanar |
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Term
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Definition
| 2 angles that add up to 90 degrees (right angle) |
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Term
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Definition
| the "then" part of a conditional |
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Term
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Definition
| the "if" and "then" statement |
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Term
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Definition
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Term
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Definition
| when the conclusion and hypothesis have changed in a conditional |
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Term
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Definition
| an example that tells its wrong |
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Term
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Definition
| when 2 lines are cut by a transversal for the corresponding angles to be congruent hen the lines are parallel. |
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Term
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Definition
| curved structure or line going inwards of a shape |
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Term
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Definition
| a surface that curves outwards of the shape |
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Term
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Definition
| 2 angles in the same position along the transversal |
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Term
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Definition
| a statement that an be proved by using a theorem |
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Term
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Definition
| the lengh of a point to another |
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Term
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Definition
| trig to prove a statement by using postulates, theorems, and definitions |
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Term
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Definition
| distributing the number or variable to the numbers or variables that are inside of the parenthesis |
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Term
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Definition
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Term
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Definition
| a line connecting 2 non adjacent vertices of a shape |
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Term
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Definition
| 2 points the same distance from the 3rd point |
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Term
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Definition
| when 2 numbers have the same value |
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Term
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Definition
| a triangle with all congruent angles |
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Term
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Definition
| a triangle with all congruent sides |
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Term
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Definition
| an angle outside the parallel lines or figure |
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Term
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Definition
| information given when writting proofs |
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Term
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Definition
| the "if" part of a conditional |
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Term
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Definition
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Term
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Definition
| the opposite side of the right angle in a right triangle |
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Term
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Definition
| lines that touch(at a point) planes that touch at a line) |
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Term
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Definition
| prediction or conclusion based on examples shown before |
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Term
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Definition
| angles between parallel lines cut by a transversal |
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Term
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Definition
| a triangle with 2 congruent sides |
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Term
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Definition
| an adjacent pair when their rays form a straight angle ( they always are supplementary 180) |
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Term
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Definition
| the other sides of the triangle other than the hypotenuse |
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Term
| leg of an isosceles triangle |
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Definition
| the congruent sides of an isosceles triangle other than the base |
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Term
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Definition
| the point that is equidistant from the points at the end of a line segment |
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Term
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Definition
| group of points that are not in the same line of a plane |
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Term
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Definition
| points not on the same plane |
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Term
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Definition
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Term
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Definition
| an angle measuring more than 90 degrees |
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Term
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Definition
| a triangle with one obtuse angle |
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Definition
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Term
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Definition
| a flat surface that extends in all directions |
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Term
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Definition
| represents a location/ vertex(smallest unit in geometry) |
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Term
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Definition
| a straight line that right angles to another line |
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Term
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Definition
| a rule that we think is true |
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Term
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Definition
| sequence of conclusions gotten out of an example trying to prove a statement |
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Term
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Definition
| when you tell apart a shape |
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Term
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Definition
| lines that never touch, going in the same direction |
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Term
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Definition
| planes that never touch going in the same direction |
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Term
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Definition
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Term
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Definition
| a closed figure having 3 or more sides |
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Term
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Definition
| same as a proof except in a form of a paragraph |
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Term
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Definition
| a line that is perpendicular to the segment midpoint |
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Term
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Definition
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Term
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Definition
| a series of points that extend in direction |
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Definition
| an angle measuring exactly 90 degrees |
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Term
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Definition
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Term
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Definition
| a triangle with 1 right angle |
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Term
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Definition
| group of points that extend between 2 end points |
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Term
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Definition
| cuts a segment into 2 congruent parts |
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Definition
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Term
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Definition
| an angle measuring exactly 180 degrees |
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Term
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Definition
| angles that sum up to 180 degrees |
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Term
| same side interior angles |
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Definition
| two angles inside 2 lines on the same side of the transversal |
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Term
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Definition
| a triangle with no congruent sides |
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Term
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Definition
| the segments of a triangle |
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Term
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Definition
| lines in different planes that never touch and go in different directions |
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Term
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Definition
| when 3 sides of a triangle are congruent to the same sides of the other triangle |
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Term
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Definition
| if 2 sides of a triangle and the included angle are congruent to the same of the other triangle |
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Term
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Definition
| a rule that is proven to be true |
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Term
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Definition
| states any numbers that are equal |
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Term
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Definition
| proofs in the form of 2 columns (statements and reasons) |
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Term
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Definition
| a line that intersects coplanar lines in many different points |
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Term
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Definition
| a figure that has 3 sides and always measures 180 degrees |
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Term
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Definition
| the point where the sides of the angle meet |
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Term
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Definition
| pair of angles when they go across each other when 2 lines intersect |
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Term
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Definition
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Term
| vertex angle of an isosceles triangle |
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Definition
| the angle opposite of the base |
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Term
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Definition
| an angle measuring exactly 0 degrees |
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