Interior Angles of Triangles

Front

What is the total sum of the interior angles of a triangle?

Back

180 degrees

Front

If one angle of a triangle measures 80 degrees and another measures 60 degrees, what is the measure of the third angle?

Back

40 degrees

Front

What is the measure of each interior angle in an equilateral triangle?

Back

60 degrees

Front

In a triangle, if one angle measures 90 degrees, what type of triangle is it?

Back

Right triangle

Front

What is the relationship between the angles in a triangle?

Back

The sum of the interior angles is always 180 degrees.

Front

If two angles of a triangle are 50 degrees and 70 degrees, what is the measure of the third angle?

Back

60 degrees

Front

What do you call a triangle with all angles less than 90 degrees?

Back

Acute triangle

Front

What do you call a triangle with one angle greater than 90 degrees?

Back

Obtuse triangle

Front

If a triangle has angles measuring 30 degrees and 60 degrees, what is the measure of the third angle?

Back

90 degrees

Front

How do you find the measure of a missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.