Triangle Angles 3

Front

What is the sum of the angles in a triangle?

Back

180 Degrees

Front

Which of the following sets of angles can form a triangle? A) 120°, 50°, 20° B) 100°, 200°, 60° C) 30°, 50°, 80° D) 40°, 50°, 90°

Back

D) 40°, 50°, 90°

Front

Which of the following angle measurements does NOT create a triangle? A) 60°, 60°, 60° B) 90°, 45°, 45° C) 50°, 60°, 40° D) 50°, 100°, 30°

Back

C) 50°, 60°, 40°

Front

If one angle of a triangle is 95°, what could be the measures of the other two angles?

Back

The other two angles must add up to 85°.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

If a triangle has angles measuring 45° and 90°, what is the measure of the third angle?

Back

The third angle measures 45°.

Front

What is the definition of a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

How do you determine if three angles can form a triangle?

Back

The sum of the three angles must equal 180 degrees.