4.6C Classifying Triangles by Their Angles

Front

What is an obtuse triangle?

Back

A triangle with an angle larger than 90 degrees.

Front

What is an acute triangle?

Back

A triangle where all angles are less than 90 degrees.

Front

What is a right triangle?

Back

A triangle with one angle equal to 90 degrees.

Front

Classify a triangle with angles measuring 30°, 60°, and 90°.

Back

Right triangle.

Front

Classify a triangle with angles measuring 45°, 45°, and 90°.

Back

Right triangle.

Front

Classify a triangle with angles measuring 70°, 60°, and 50°.

Back

Acute triangle.

Front

Classify a triangle with angles measuring 100°, 40°, and 40°.

Back

Obtuse triangle.

Front

What is the sum of the angles in any triangle?

Back

180 degrees.

Front

If a triangle has one angle that is 95 degrees, what type of triangle is it?

Back

Obtuse triangle.

Front

If all angles in a triangle are less than 90 degrees, what type of triangle is it?

Back

Acute triangle.