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 is 90 degrees, what type of triangle is it?

Back

Right triangle

Front

What do you call a triangle with all three 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 two angles of a triangle are 70 degrees and 50 degrees, what is the measure of the third angle?

Back

60 degrees

Front

In a triangle, if one angle measures 45 degrees and another measures 45 degrees, what is the measure of the third angle?

Back

90 degrees

Front

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

Back

60 degrees

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 missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the interior angles is always 180 degrees.