Classify Triangles (Sides/Angles)

Front

What is a triangle?

Back

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

Front

What are the types of triangles based on sides?

Back

1. Equilateral: All sides are equal. 2. Isosceles: Two sides are equal. 3. Scalene: All sides are different.

Front

What are the types of triangles based on angles?

Back

1. Acute: All angles are less than 90 degrees. 2. Right: One angle is exactly 90 degrees. 3. Obtuse: One angle is greater than 90 degrees.

Front

How do you classify a triangle with one right angle?

Back

It is classified as a right triangle.

Front

How do you classify a triangle with all sides equal?

Back

It is classified as an equilateral triangle.

Front

What is an isosceles triangle?

Back

An isosceles triangle has at least two sides that are equal in length.

Front

What is a scalene triangle?

Back

A scalene triangle has all sides of different lengths.

Front

What is an acute triangle?

Back

An acute triangle has all angles measuring less than 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle has one angle that measures more than 90 degrees.

Front

If a triangle has two equal angles, what type of triangle is it?

Back

It is an isosceles triangle.