Types of Triangles

Front

What is an obtuse triangle?

Back

A triangle with one angle greater 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 acute triangle?

Back

A triangle where all angles are less than 90 degrees.

Tags

CCSS.4.G.A.2

Front

How many angles does a triangle have?

Back

A triangle has three angles.

Tags

CCSS.2.G.A.1

Front

What is the sum of the angles in a triangle?

Back

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

Tags

CCSS.8.G.A.5

Front

What type of triangle has all sides of different lengths?

Back

A scalene triangle.

Tags

CCSS.4.G.A.2

Front

What type of triangle has at least two sides of equal length?

Back

An isosceles triangle.

Tags

CCSS.4.G.A.2

Front

What type of triangle has all sides of equal length?

Back

An equilateral triangle.

Tags

CCSS.4.G.A.2

Front

Can a triangle be both obtuse and right?

Back

No, a triangle cannot be both obtuse and right.

Tags

CCSS.4.G.A.2

Front

What is the defining feature of a right triangle?

Back

It has one right angle.

Tags

CCSS.2.G.A.1