Angles in a Triangle

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is an 'Acute' Angle?

Back

An angle that measures less than 90 degrees.

Front

What is a 'Right' Angle?

Back

An angle that measures exactly 90 degrees.

Front

What is an 'Obtuse' Angle?

Back

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

Front

If two angles in a triangle are 50 degrees and 60 degrees, what is the measure of the third angle?

Back

The third angle measures 70 degrees.

Front

What is the relationship between the angles in a triangle?

Back

The angles in a triangle are related such that their sum is always 180 degrees.

Front

Find the missing angle if one angle is 30 degrees and another is 50 degrees.

Back

The missing angle is 100 degrees.

Front

Which of the following could be angle measures for a triangle? A) 120°, 50°, 20° B) 100°, 200°, 60° C) 30°, 50°, 80° D) 40°, 50°, 90°

Back

D) 40°, 50°, 90° are valid angle measures for a triangle.

Front

What is the definition of a triangle?

Back

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

Front

If one angle of a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.