Angles in a Quadrilateral

Front

What is the sum of the interior angles of a quadrilateral?

Back

The sum of the interior angles of a quadrilateral is 360 degrees.

Front

If one angle of a quadrilateral is 92 degrees and the other three angles are equal, what is the measure of each of the equal angles?

Back

Each of the equal angles measures 68 degrees.

Tags

CCSS.HSG.C.A.3

Front

What is the relationship between the exterior angle and the interior angles of a quadrilateral?

Back

The exterior angle of a quadrilateral is equal to the sum of the two opposite interior angles.

Front

How do you calculate the measure of an unknown angle in a quadrilateral?

Back

To find an unknown angle, subtract the sum of the known angles from 360 degrees.

Tags

CCSS.HSG.C.A.3

Front

What is a convex quadrilateral?

Back

A convex quadrilateral is a four-sided figure where all interior angles are less than 180 degrees.

Tags

CCSS.5.G.B.4

Front

What is a concave quadrilateral?

Back

A concave quadrilateral is a four-sided figure that has at least one interior angle greater than 180 degrees.

Tags

CCSS.4.G.A.2

Front

If a quadrilateral has angles measuring 100 degrees, 85 degrees, and 75 degrees, what is the measure of the fourth angle?

Back

The fourth angle measures 100 degrees.

Tags

CCSS.HSG.C.A.3

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the definition of an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the definition of an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1