Angle Measures 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 do you call a triangle with all sides of different lengths?

Back

Scalene triangle.

Front

What do you call a triangle with at least two equal sides?

Back

Isosceles triangle.

Front

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

Back

60 degrees.

Front

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

Back

90 degrees.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the angles is always 180 degrees.

Front

If one angle of a triangle is 50 degrees and another is 60 degrees, what is the third angle?

Back

70 degrees.

Front

What is the term for an angle greater than 90 degrees but less than 180 degrees?

Back

Obtuse angle.

Front

What is the term for an angle less than 90 degrees?

Back

Acute angle.