Geometry Flashcards
1
Q
Total degrees of a polygon
A
180(n-2) , where n # of sides
2
Q
Average degrees per side or degree measure of congruent polygon?
A
(180(n-2))/n
3
Q
Isosceles triangle
A
Degrees 45:45:90
Ratio of sides x:x:x_/2
4
Q
30-60-90 triangle
A
Ratio of sides x:x_/3:2x
5
Q
Pythagorean triples (4 examples)
A
3-4-5 multiple 6-8-10
5-12-13
8-15-17
7-24-25
6
Q
Area of a circle
A
Pir^2 = 3.14r^2
7
Q
Circumference
A
2pi*r
8
Q
Arc length
A
arc degrees/360 = arc length/ circumference
x/360 = X/ 2pi*r
9
Q
Area of sector
A
x/360 = area/pi*r^2
10
Q
Perimeter of a square
A
4s, where s length of sides
11
Q
Area of square
A
s^2 , where s length of sides
12
Q
Trapezoid area
A
(Base1 + Base2)/2 * height
13
Q
Cube volume
A
s^3
14
Q
Surface area cube
A
6s^2
15
Q
Rectangular solid volume
A
HDW
