Interior Angles of Triangles

Front

What is the 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 is the measure of the third angle if two angles are 40 degrees and 60 degrees?

Back

80 degrees

Front

In a triangle, if one angle measures 30 degrees and another measures 70 degrees, what is the measure of the third angle?

Back

80 degrees

Front

What is the formula to find the measure of a missing angle in a triangle?

Back

180 - (sum of the known angles)

Front

If a triangle has angles measuring 50 degrees and 60 degrees, what is the measure of the third angle?

Back

70 degrees

Front

What type of triangle has all three angles measuring less than 90 degrees?

Back

Acute triangle

Front

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

Back

60 degrees

Front

If two angles of a triangle are equal and each measures 45 degrees, what is the measure of the third angle?

Back

90 degrees

Front

How do you determine if a triangle is obtuse?

Back

If one angle measures more than 90 degrees.