Classifying Triangles

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length.

Front

How do you classify triangles by their angles?

Back

Triangles can be classified as acute (all angles less than 90°), obtuse (one angle greater than 90°), or right (one angle exactly 90°).

Front

What is an acute triangle?

Back

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

Front

What is an obtuse triangle?

Back

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

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle equal to 90°.

Front

What is the sum of the angles in any triangle?

Back

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

Front

How do you classify triangles by their sides?

Back

Triangles can be classified as scalene, isosceles, or equilateral based on the lengths of their sides.

Front

What is the definition of a triangle?

Back

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