Missing Angles in Triangles

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

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

Back

It is a right triangle.

Front

What do you call an angle that is less than 90 degrees?

Back

An acute angle.

Front

What do you call an angle that is greater than 90 degrees but less than 180 degrees?

Back

An obtuse angle.

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.

Front

If two angles in a triangle are 36 degrees and 85 degrees, what is the measure of the third angle?

Back

The third angle is 59 degrees.

Front

What is the measure of angle A if angle B is 50 degrees and angle C is 80 degrees?

Back

Angle A is 50 degrees.

Front

In a triangle, if one angle is 61 degrees and another is 69 degrees, what is the missing angle?

Back

The missing angle is 50 degrees.

Front

What is the measure of angle b if angle a is 36 degrees and angle c is 108 degrees?

Back

Angle b is 36 degrees.

Front

What is the relationship between the angles in an isosceles triangle?

Back

In an isosceles triangle, two angles are equal.