Triangles
Angles
Pythagorean Theorem
Interior and Exterior Angles of Triangles
Interior Angles of Polygons
100
I have one 90 degree angle.
A right triangle
100
I am any angle that is less than 90 degrees.
an acute angle
100

A right triangle has side lengths of 12 inches and 5 inches. What is the length of the hypotenuse, in inches?

13

100

Two angles are complementary. If m∠A is twice the sum of m∠B plus 15°, how many degrees is m∠B?

20 degrees

100

How many degrees is the sum of the measures of the interior angles of a regular polygon with 20 sides? 

3,240 degrees

200
I have 3 sides that are all the same length
equilateral triangle
200
I am an angle that is greater than 90 degrees
an obtuse angle
200

The three side lengths of four triangles are given. Which triangle is a right triangle?

Triangle 1: 10, 265, 14 

Triangle 2: 6, 8, 10 

Triangle 3: 4, 14, 15 

Triangle 4: 9, 2140, 14

Triangle 2

200

In the figure, m∠1 = 56.2°, m∠2 = 68.7° and m∠4 = 124.9°. What is m∠3, in degrees?

55.1 degrees

200

How many degrees is the sum of the measures of the interior angles of a regular polygon with 14 sides?

2,160 degrees

300
I am a triangle with 1 angle greater than 90 degrees and 2 angles less than 90 degrees
an obtuse triangle
300
I am an angle that measures exactly 90 degrees
a right angle
300

Maliki is building a ramp with a base of 4 feet and a vertical height of 2 feet. What is the length of the ramp? Round to the nearest tenth.

4.47 feet

300

What is the measure of ∠1, interior angle, when the exterior angle is 112.6 degrees?

A   m∠1 = 58.2°

B   m∠1 = 67.4°

C   m∠1 = 75.5°

D   m∠1 = 104.5° 


67.4 degrees

300

Find the number of degrees for the sum of the interior angles of a Hendecagon (11-sided figure polygon).

1,620 degrees

400
Describe an Isosceles triangle
A triangle with TWO sides that are the same LENGTH and ONE side that is a DIFFERENT LENGTH
400
I am a straight angle, what is my measurement in degrees?
180 degrees
400

A triangular bookshelf has a base of 10 inches, 11 inches, and 15 inches. Will the bookshelf fit in the corner of a square living room? Explain.

No. It's not a right triangle.

400

Two angles lie along a straight line. If m∠A is four times the sum of m∠B plus 12.5°, how many degrees is m∠B?

65 degrees

400

What polygon has interior angle measure of 135 degrees?

Octagon

500
is it possible to have a triangle with 2 right angles?
no
500

What are opposite angles with equal measure called?

What are vertical angles?

500

Calvin’s house is located at (0, 0) on a coordinate plane. The school is 3 miles directly south of his house. After school, he takes a bus 2 miles directly west to the sports complex. How many miles long is a straight line between Calvin’s house and the sports complex? Round to the nearest tenth.

3.6 miles

500

In the figure, m∠1 = (5x + 4)°, m∠2 = (6x - 6)° and m∠4 = (10x + 12)°. What is m∠4, exterior angle, in degrees?

152 degrees

500

If each angle of a dodecagon is 23x-12, what is the value of x?

x=6

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