Classify Triangles by Angles

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What type of triangle has one right angle?

Back

Right triangle.

Front

True or False: An obtuse triangle has 1 obtuse angle.

Back

True.

Front

What is an acute triangle?

Back

A triangle where all angles are less than 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

What is the sum of the angles in any triangle?

Back

180 degrees.

Front

Classify a triangle with angles measuring 120°, 30°, and 30°.

Back

Obtuse triangle.

Front

What is an equilateral triangle?

Back

A triangle where all three sides and angles are equal.