Types of Triangles

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Tags

CCSS.2.G.A.1

Front

What are the three types of triangles based on angles?

Back

Acute, Right, and Obtuse.

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

What is a right triangle?

Back

A triangle that has one angle equal to 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

How can you identify a right triangle?

Back

If one of its angles measures exactly 90 degrees.

Tags

CCSS.2.G.A.1

Front

If a triangle has angles measuring 30°, 60°, and 90°, what type of triangle is it?

Back

Right triangle.

Tags

CCSS.4.G.A.2

Front

If a triangle has angles measuring 45°, 45°, and 90°, what type of triangle is it?

Back

Right triangle.

Tags

CCSS.4.G.A.2

Front

If a triangle has angles measuring 70°, 60°, and 50°, what type of triangle is it?

Back

Acute triangle.

Tags

CCSS.4.G.A.2

Front

If a triangle has angles measuring 120°, 30°, and 30°, what type of triangle is it?

Back

Obtuse triangle.

Tags

CCSS.4.G.A.2