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GRE Math
Geometry
23
Other
Graduate
05/07/2008
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Term
slope=
 Definition
rise/run or y2-y1/x1-x2
Term
how to slove the slope of a line from a algebraic equation? ex. 3x+2y=4
 Definition
slove useing the formula y=mx+b, m=slope
Term
The sum of the interior angles to all triangles equals?
 Definition
180
Term
area of a triangle?
 Definition
triangle area= 1/2(BH)
Term
Isosceles triangle have two equal?
 Definition
sides and angles
Term
Equilateral has equal what?
 Definition
three sides and angles
Term
pythagorean theorem to figure out sides of triangles is?
 Definition
a^2 + b^2=c^2
Term
What are the pythagorean triplets? 3 Most common pythagoreans used.
 Definition
3^2 + 4^2 =5^2
6^2 + 8^2= 10^2
5^2 + 12^2 = 13^2
Term
Ratio of isosceles right triangle and 30-60-90 triangle
 Definition
1:1:sq.root of 2

1:sq.rt 3:2
Term
Area of a rectangle?
 Definition
l*w
Term
Area of a square?
 Definition
s^2
Term
The sum of the measures of the interior angles of a quadrilateral is?
 Definition
360
Term
How to solve the circumference of a circle?
 Definition
C= pie*d or C= 2pie*r
Term
Area of a circle?
 Definition
a= pie*r^2
Term
arc length=
 Definition
(h/360)2pie(r)
Term
area of sector=
 Definition
(x/360)pie(r^2)
Term
Volume of rectangle=
 Definition
(L)(W)(H)
Term
surface area of rectangle=
 Definition
2(LW)+2(LH)+2(WH)
Term
vol. of cube=
 Definition
e^3
Term
surface area of cube=
 Definition
(6)e^2
Term
vol of cylinder=
 Definition
pie*r^2(H)
Term
lateral surface area of cylinder=
 Definition
2pie*r(H)
Term
total surface area=
 Definition
2pie*r^2+ 2pie*rh
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