Geometry Flashcards
1
Q
of triangles in a polygon
A
n-2
2
Q
Sum of interior angles
A
(n-2)(180)
3
Q
45-45-90 special right triangle
A
x, x, x(2)^1/2
4
Q
30-60-90 special right triangle
A
x, x(3)^1/2, 2x
5
Q
Triangle congruence
A
Side-side-side
Side-angle-side
Angle-side-angle
6
Q
Area of paralellogram
A
A = bh
7
Q
Area of trapezoid
A
1/2 (b + b) h
8
Q
If the diameter of a circle is one side of a triangle circumscribed within the circle, then
A
The angle opposite the diameter side is 90 degrees right angle
9
Q
Volume of cube
A
Lwh
10
Q
Surface area of cube
A
2(lw + lh + wh)
11
Q
Volume of cylinder
A
Pie (r^2) h
12
Q
Surface area of cyclinder
A
2(Pie(r^2)) + 2(Pie(r)h)
