Types of Triangles

Front

What is a right-angled 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 angles are less than 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Tags

CCSS.4.G.A.2

Front

What is a scalene triangle?

Back

A triangle where all sides and angles are different.

Tags

CCSS.4.G.A.2

Front

What type of triangle has all sides equal?

Back

Equilateral triangle.

Tags

CCSS.4.G.A.2

Front

What is the sum of the angles in any triangle?

Back

180 degrees.

Tags

CCSS.8.G.A.5

Front

How can you identify a right triangle?

Back

It has one angle that is exactly 90 degrees.

Tags

CCSS.2.G.A.1

Front

What type of triangle is formed by angles of 30°, 60°, and 90°?

Back

Right triangle.

Tags

CCSS.4.G.A.2

Front

What type of triangle is formed by angles of 45°, 45°, and 90°?

Back

Isosceles right triangle.

Tags

CCSS.4.G.A.2