Geometry

Question 1

Total degrees of a polygon

Answer 1

180(n-2) , where n # of sides

Question 2

Average degrees per side or degree measure of congruent polygon?

Answer 2

(180(n-2))/n

Question 3

Isosceles triangle

Answer 3

Degrees 45:45:90

Ratio of sides x:x:x_/2

Question 4

30-60-90 triangle

Answer 4

Ratio of sides x:x_/3:2x

Question 5

Pythagorean triples (4 examples)

Answer 5

3-4-5 multiple 6-8-10
5-12-13
8-15-17
7-24-25

Question 6

Area of a circle

Answer 6

Pir^2 = 3.14r^2

Question 7

Circumference

Answer 7

2pi*r

Question 8

Arc length

Answer 8

arc degrees/360 = arc length/ circumference

x/360 = X/ 2pi*r

Question 9

Area of sector

Answer 9

x/360 = area/pi*r^2

Question 10

Perimeter of a square

Answer 10

4s, where s length of sides

Question 11

Area of square

Answer 11

s^2 , where s length of sides

Question 12

Trapezoid area

Answer 12

(Base1 + Base2)/2 * height

Question 13

Cube volume

Answer 13

s^3

Question 14

Surface area cube

Answer 14

6s^2

Question 15

Rectangular solid volume

Answer 15

HDW

Question 16

Surface area rectangular solid

Answer 16

2heightwidth+ 2widthdepth+ 2depthheight= total areas of each rectangle

Question 17

Cylinder volume

Answer 17

r^2pih

Question 18

Cylinder surface area

Answer 18

2pir^2+2pirh= 2pir(r+h)

Question 19

Equilateral triangle area

Answer 19

A= (_/3)/2 a^2