Types of Triangles

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length and all angles measuring 60 degrees.

Tags

CCSS.4.G.A.2

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length and the angles opposite those sides are equal.

Tags

CCSS.4.G.A.2

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Tags

CCSS.4.G.A.2

Front

What is a right triangle?

Back

A triangle that has one angle measuring 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is an obtuse triangle?

Back

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

Tags

CCSS.4.G.A.2

Front

What is an acute triangle?

Back

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

Tags

CCSS.4.G.A.2

Front

How can you identify an isosceles triangle?

Back

Look for two sides that are the same length and two angles that are equal.

Tags

CCSS.2.G.A.1

Front

What is the sum of the angles in any triangle?

Back

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

Tags

CCSS.8.G.A.5

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.

Tags

CCSS.4.G.A.2

Front

What is the difference between an obtuse triangle and an acute triangle?

Back

An obtuse triangle has one angle greater than 90 degrees, while an acute triangle has all angles less than 90 degrees.

Tags

CCSS.4.G.A.2