Angles & Triangles

Question 0

What is a right angle

Answer 0

One that equals 90º

Question 1

What is an Acute Angle?

Answer 1

One less than 90º

Question 2

What is an obtuse angle?

Answer 2

One that is more than 90º but less than 180º

Question 3

What is a straight angle?

Answer 3

One that is 180º exactly

Question 4

What is a reflex angle?

Answer 4

One that is more than 180º but less than 360º

Question 5

What are supplementary angles?

Answer 5

Two angles than total 180º when put together

Question 6

What are complementary angles?

Answer 6

Two angles that total 90º when put together

Question 7

Will a line that cuts through two or more parallel lines create sets of matching angles?

Answer 7

Yes

Question 8

What are vertical angles?

Answer 8

The vis-á-vis angles that are created when two lines cross

These angles will be equal

Question 9

A triangle is a ______ with three sides.

Answer 9

Polygon

Question 10

A triangle’s angles sum to _____º.

Answer 10

180º

Question 11

The altitude of a triangle is its ______.

Answer 11

Height

Question 12

The base of the triangle is its ______.

Answer 12

Length

Question 13

The perimeter of a triangle is ________.

Answer 13

The sum of it’s three sides

Question 14

The area of a triangle is _______.

Answer 14

½(base x height)

Question 15

What is the angle bisector of a triangle?

Answer 15

A line that bisects an angle in a triangle

Question 16

What is a triangle’s median?

Answer 16

A line drawn from any angle in a triangle to the midpoint of the opposite side

Question 17

What is a scalene triangle?

Answer 17

One with unequal angles and unequal sides

Question 18

What is an isosceles triangle?

Answer 18

One with at least two equal sides

Question 19

An isosceles triangle will have _____ angles.

Answer 19

Two equal

Question 20

The two equal angles in an isosceles triangle are called the ______ angles. The other angle is called the ______ angle.

Answer 20

Base

Vertex

Question 21

What is an equilateral triangle?

Answer 21

One where all the sides are the same

Question 22

What is the size of the angles in an equilateral triangle?

Answer 22

60º

Question 23

What is the perimeter of an equilateral triangle?

Answer 23

3(side)

Question 24

What is the area of an equilateral triangle?

Answer 24

 4

Question 25

What is the hypotenuse of a triangle?

Answer 25

The side opposite the right angle

Question 26

What is an obtuse triangle?

Answer 26

One with one obtuse angle

Question 27

What is an exterior angle of a triangle?

Answer 27

The angle created by extending on side

Question 28

The sum of any two sides of a triangle must be __________.

Answer 28

Greater than the third side

Question 29

The largest angle of a triangle will lie opposite to its ___________.

Answer 29

Largest side

Question 30

A side of a triangle must be _____ and _____ of the other two sides.

Answer 30

Greater than the difference

Less than the sum

Question 31

What is the Pythagorean Theorem?

Answer 31

For right triangles, the hypotenuse squared equals the sum the othe squares of the other sides.

c² = a² + b²

Question 32

Two angles that add up to 90 degrees are called _______.

Two angles that add up to 180 degrees are called _______.

Answer 32

Complementary Angles

Supplementary Angles