Interior and Exterior Angles of Triangles

Front

What is an obtuse triangle?

Back

A triangle with one angle measuring more than 90 degrees.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What type of angle measures exactly 90 degrees?

Back

Right angle.

Front

Which angles can be added together to equal a specific angle in a triangle?

Back

The two angles that are adjacent to the angle in question.

Front

What is an acute triangle?

Back

A triangle where all angles are less than 90 degrees.

Front

What is an exterior angle of a triangle?

Back

An angle formed by one side of the triangle and the extension of an adjacent side.

Front

How do you find the measure of an exterior angle?

Back

It is equal to the sum of the two opposite interior angles.

Front

What is the relationship between the interior and exterior angles of a triangle?

Back

The exterior angle is equal to the sum of the two non-adjacent interior angles.

Front

Can a triangle have two obtuse angles?

Back

No, a triangle can only have one obtuse angle.

Front

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

Back

Each angle measures 60 degrees.