Classifying Triangles

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are less than 90 degrees.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one right angle (90 degrees).

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are of equal length and all three angles are equal (each measuring 60 degrees).

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle that has no congruent sides.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two congruent sides.

Front

What defines the angles in a right triangle?

Back

A right triangle has one angle that is exactly 90 degrees.

Front

How many congruent sides does a scalene triangle have?

Back

A scalene triangle has no congruent sides.

Front

What are the properties of an equilateral triangle?

Back

An equilateral triangle has three equal sides and three equal angles, each measuring 60 degrees.

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is always 180 degrees.