Missing Angles in Triangles / Naming Triangles

Front

What is an obtuse triangle?

Back

A triangle with one angle greater than 90 degrees.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If a triangle has one right angle, what type of triangle is it?

Back

Right triangle.

Front

What do you call a triangle with all sides of equal length?

Back

Equilateral triangle.

Front

How many degrees are in each angle of an equiangular triangle?

Back

60 degrees.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What type of triangle has two equal sides?

Back

Isosceles triangle.

Front

What are right angles?

Back

Angles that measure exactly 90 degrees.

Front

How can you classify a triangle with all angles less than 90 degrees?

Back

Acute triangle.

Front

What is the term for angles that add up to 90 degrees?

Back

Complementary angles.