Geometry

Question 1

formula circumfrence of a circle

Answer 1

C = 2πr

Question 2

what is the 30-60-90 triangle and what are the proportions of its sides?

Answer 2

hypotenuse = 2(short leg)

long leg = root3(short leg)

it is what happens if you take half an equalateral triangle.

Question 3

How do you calculate the area of an equalateral triangle?

Answer 3

Question 4

What are the lengths (proportions) of the sides of a right isosceles triangle?

Answer 4

Question 5

A) What is a paralleogram?

B) What are the 4 propeties of parallelograms?

C)What is special about them?

Answer 5

A) a parallelogram is a quadrilateral with two pairs of parallel sides

B)

1. opposite sides are parallel
2. opposite sides ar equal
3. opposite angles are equal
4. diagnals bisect each other (the meet at the midpoint of the parallelogram)

C) If ANY are true ALL are true, if ANY are false ALL none are true

Question 6

What are 3 properties of inscribed angles

Answer 6

Question 7

What is the volume of a cube?

Answer 7

Question 8

What is the total surface area of a cube?

Answer 8

Question 9

How do you find an arc length?

Answer 9

Question 10

What is the formual for the sum of the interior angles of a polygon?

What is the formula for each interior angle of a polygon?

What is the sum of the exterior angles?

What is the formula for each exterior angle

Answer 10

Where n = number of sides

Question 12

What is the formula for the circumference of a circle?

Answer 12

Question 13

If we know the length of two sides of a triangle (P and Q) then the length of the third unknown side (R) must be…?

Answer 13

P = known Q= known R = unknown

P-Q< R< P+Q

the unknown side must be larger than the difference of the kown sides, but smaller than their sum

Question 14

How do you find the volume of a rectangular solid?

Answer 14

V = h*w*d

Volume = height x width x depth

Question 15

How do you find the area of a triangle?

Answer 15

Question 16

Is approximately equal to?

Answer 16

22

7

Question 17

What is a trapezoid? what are its sides called?

Answer 17

A quadralateral that has exactly 1 pair of parallel sides

parallel sides = bases

non-parallel sides = legs

Question 18

What are the 4 pythagorean triplets that are common on the exam? What should be noted about them?

Answer 18

Each of the sides can be multipled by a constant to produce a new set e.g. 3, 4, 5 could be multiplied by 2 to give 6, 8, and 10

Question 19

Wha is the formula for the surface area of a cylinder?

Answer 19

Question 20

What is a 5 sided regular polygon called? What is a 6 sided regular polygon called?

Answer 20

5 sided - pentagon

6 sided hexagon

(sorry Katie - this super basic but I mess them up for some reason)

Question 21

What is the forumla for the area of a circle?

Answer 21

Question 22

What is the formula for the volume of a cylinder?

Answer 22

area of the base x height

Question 23

How do you find the area of a trapezoid?

Answer 23

Area = base x height

where the base is the average of the lengths of the two parrallel sides (bases)

Question 24

How do you find the space diagonal of a rectangular solid?

Answer 24

diagonal² = width² x length² x height ²

Question 25

How do you find the space diagonal of a cube?

Answer 25

root3 * side

Question 26

Area of a circle

Answer 26

Question 27

What is the ratio of the circumferance to the diameter of a circle equal to?

Answer 27

pi

Question 28

An exterior angle of a triangle equals?

Answer 28

Question 29

a line tangent to a circle ________________

Answer 29

forms a 90 degree angle with the radius