Acute, Right, or Obtuse?

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three interior 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 of the interior angles is greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is the triangle inequality theorem?

Back

The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Front

Given lengths 6", 8", and 10", classify the triangle.

Back

Right triangle.

Tags

CCSS.2.G.A.1

Front

Can sticks of lengths 10cm, 11cm, and 13cm form a right triangle?

Back

No, because 10^2 + 11^2 does not equal 13^2.

Tags

CCSS.8.G.B.8

Front

Given lengths 2, 12, and 13, classify the triangle.

Back

Obtuse triangle.

Tags

CCSS.4.G.A.2

Front

Given lengths 4", 7", and 10", classify the triangle.

Back

Obtuse triangle.

Tags

CCSS.4.G.A.2

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

Tags

CCSS.8.G.B.8

Front

If a triangle has sides of lengths 5, 12, and 13, classify it.

Back

Right triangle.

Tags

CCSS.8.G.B.8