Classify Triangles by Sides and Angles

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

How many angles does an acute triangle have?

Back

3 acute angles.

Front

What defines a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is a right triangle?

Back

A triangle that has one angle measuring 90 degrees.

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length and all angles measuring 60 degrees.

Front

What type of triangle has one obtuse angle?

Back

An obtuse triangle.

Front

How can you classify a triangle with two equal sides?

Back

It is classified as an isosceles triangle.

Front

What is the sum of the angles in any triangle?

Back

180 degrees.

Front

What type of triangle has all angles less than 90 degrees?

Back

An acute triangle.

Front

What is the difference between an acute triangle and an obtuse triangle?

Back

An acute triangle has all angles less than 90 degrees, while an obtuse triangle has one angle greater than 90 degrees.