Classifying Triangles

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the three types of triangles based on side lengths?

Back

Equilateral, Isosceles, and Scalene.

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What are the three types of triangles based on angles?

Back

Acute, Right, and Obtuse.

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90°.

Front

What is a right triangle?

Back

A triangle that has one angle measuring exactly 90°.

Front

What is an obtuse triangle?

Back

A triangle that has one angle measuring more than 90°.

Front

How many equal sides does an isosceles triangle have?

Back

Two equal sides.