Classifying Triangles

Front

What are the three main types of triangles classified by angles?

Back

Acute, Right, Obtuse.

Front

What are the three main types of triangles classified by sides?

Back

Equilateral, Isosceles, Scalene.

Front

Define an acute triangle.

Back

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

Front

Define a right triangle.

Back

A triangle that has one angle equal to 90 degrees.

Front

Define an obtuse triangle.

Back

A triangle that has one angle greater than 90 degrees.

Front

What is an equilateral triangle?

Back

A triangle where all three sides are equal in length and all angles are equal to 60 degrees.

Front

What is an isosceles triangle?

Back

A triangle that has at least two sides of equal length.

Front

What is a scalene triangle?

Back

A triangle where all three sides are of different lengths.

Front

Can a triangle be both isosceles and right?

Back

Yes, a triangle can be both isosceles and right if it has two equal sides and one right angle.

Front

What is the sum of the angles in any triangle?

Back

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