Parallelograms Practice

Front

What is a parallelogram?

Back

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

Front

What are the properties of a parallelogram?

Back

1. Opposite sides are equal in length. 2. Opposite angles are equal. 3. Diagonals bisect each other.

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 70°, what are the measures of the other angles?

Back

The opposite angle is also 70°, and the adjacent angles are 110° each.

Front

What is the relationship between the diagonals of a parallelogram?

Back

The diagonals of a parallelogram bisect each other.

Front

How do you find the length of a diagonal in a parallelogram?

Back

Use the formula: d = √(a² + b² - 2ab cos(θ)), where a and b are the lengths of the sides and θ is the angle between them.

Front

What does it mean for sides to be parallel?

Back

Parallel sides are lines that run in the same direction and never meet, no matter how far they are extended.

Front

If two sides of a parallelogram are 10 cm and 8 cm, what can you say about the opposite sides?

Back

The opposite sides will also be 10 cm and 8 cm respectively.

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height.

Front

If the base of a parallelogram is 5 cm and the height is 3 cm, what is the area?

Back

Area = 5 cm × 3 cm = 15 cm².