Types of Triangles

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

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are equal in length and all three angles are equal to 60 degrees.

Tags

CCSS.4.G.A.2

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle where all three sides are of different lengths.

Tags

CCSS.4.G.A.2

Front

How can you identify an acute triangle?

Back

You can identify an acute triangle by measuring its angles; if all angles are less than 90 degrees, it is acute.

Tags

CCSS.4.G.A.2

Front

How can you identify a right triangle?

Back

You can identify a right triangle by checking if one of its angles is exactly 90 degrees.

Tags

CCSS.2.G.A.1

Front

How can you identify an obtuse triangle?

Back

You can identify an obtuse triangle by measuring its angles; if one angle is greater than 90 degrees, it is obtuse.

Tags

CCSS.4.G.A.2

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 obtuse and acute?

Back

No, a triangle cannot be both obtuse and acute at the same time.

Tags

CCSS.4.G.A.2