12-11 Geo A Review 3

Front

What is a parallelogram?

Back

A parallelogram is a four-sided figure (quadrilateral) with opposite sides that are parallel and equal in length.

Front

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

Back

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

Front

If one angle of a parallelogram is 100°, what are the measures of the other three angles?

Back

The opposite angle is also 100°, and the two adjacent angles are each 80°.

Front

What is the relationship between the opposite sides of a parallelogram?

Back

The opposite sides of a parallelogram are equal in length.

Front

How do you find the area of a parallelogram?

Back

The area of a parallelogram is found using the formula: Area = base × height.

Front

If the base of a parallelogram is 10 cm and the height is 5 cm, what is the area?

Back

Area = 10 cm × 5 cm = 50 cm².

Front

What is the relationship between the diagonals of a parallelogram?

Back

The diagonals of a parallelogram bisect each other.

Front

If the lengths of the sides of a parallelogram are 8 cm and 6 cm, what is the perimeter?

Back

Perimeter = 2 × (8 cm + 6 cm) = 28 cm.

Front

What is the formula for the length of a diagonal in a parallelogram?

Back

The length of a diagonal can be found using the formula: d = √(a² + b² - 2ab cos(θ)), where a and b are the sides and θ is the angle between them.

Front

In a parallelogram, if one angle is 140°, what is the measure of the adjacent angle?

Back

The adjacent angle is 40°.