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

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

If a rectangle has a length of 10 cm and a width of 5 cm, what is its area?

The area of the rectangle is 10 cm × 5 cm = 50 cm².

True or False: The diagonals of a rectangle intersect at their midpoints.

True.

Fill in the blank: A square is a type of quadrilateral where all sides are ___ and all angles are 90°.

Equal in length

What is the relationship between the sides of a rhombus?

In a rhombus, all sides are equal in length.

If one angle of a parallelogram is 70°, what are the measures of the opposite angle?

The opposite angle is also 70°.

What are the properties of the diagonals in a parallelogram?

The diagonals of a parallelogram bisect each other.

Fill in the blank: In a rectangle, opposite sides are ___ and ___ to each other.

Equal in length and parallel

If the length of one diagonal of a rectangle is 10√2 cm, what is the length of the other diagonal?

The length of the other diagonal is also 10√2 cm.

True or False: All rectangles are also squares.

False. Not all rectangles have equal sides.

If the angles of a quadrilateral are 90°, 80°, 70°, and x°, what is the value of x?

X = 120°.

What must be true about the angles of a rhombus?

The opposite angles of a rhombus are equal.

Fill in the blank: In a square, the diagonals intersect at ___ degrees.

90

What is the perimeter of a rectangle with length 12 cm and width 4 cm?

The perimeter is 2(12 cm + 4 cm) = 32 cm.

If a quadrilateral has two pairs of parallel sides, what is it called?

It is called a parallelogram.