3.1 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

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 angle measuring exactly 90 degrees.

Front

What is an obtuse triangle?

Back

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

Front

How can you identify a scalene triangle?

Back

A scalene triangle can be identified by the fact that all its sides and angles are different.

Front

How can you identify an isosceles triangle?

Back

An isosceles triangle can be identified by having two sides of equal length and two equal angles.

Front

How can you identify an equilateral triangle?

Back

An equilateral triangle can be identified by having all three sides and angles equal.

Front

What is the sum of the angles in any triangle?

Back

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