Classify Triangles: Acute, right, obtuse

Front

What is an acute triangle?

Back

An acute triangle is 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 right triangle is a triangle that has one angle equal to 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle where one angle is greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

How many degrees are in a triangle?

Back

A triangle has a total of 180 degrees.

Tags

CCSS.8.G.A.5

Front

What type of triangle has angles of 30°, 60°, and 90°?

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

What type of triangle has angles of 45°, 45°, and 90°?

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

What type of triangle has angles of 70°, 60°, and 50°?

Back

It is an acute triangle.

Tags

CCSS.4.G.A.2

Front

What type of triangle has angles of 120°, 30°, and 30°?

Back

It is an obtuse triangle.

Tags

CCSS.4.G.A.2

Front

If a triangle has one angle of 100°, what type of triangle is it?

Back

It is an obtuse triangle.

Tags

CCSS.4.G.A.2

Front

If all angles in a triangle are less than 90°, what type of triangle is it?

Back

It is an acute triangle.

Tags

CCSS.4.G.A.2