1. A parallelogram has a base of 12 inches, a height of 7 inches, and a slanted side of 9 inches. The area of the parallelogram is ___ square inches.
2. A parallelogram-shaped garden plot has a base of 20 m and a slanted side of 13 m. The perpendicular distance from the base to the opposite side is 12 m. What is its height?
3. A piece of stained glass is cut in the shape of a parallelogram. Its base is 10 cm, its height is 6 cm, and its slanted side is 8 cm. What is its area in square cm? ___
4. A rectangular picture frame is 30 cm tall. If it is nudged and settles into a non-rectangular parallelogram shape, what is true about its new height?
5. A patio stone is shaped like a parallelogram with a base of 14 ft, a height of 9 ft, and a slanted side of 11 ft. Which calculation correctly finds its area?
6. In parallelogram QRST, the measure of angle Q is $105^{\circ}$. What is the measure, in degrees, of the angle diagonally opposite to it, angle S? ___
7. A parallelogram has an angle measuring $80^{\circ}$. What is the measure of an adjacent angle?
8. In parallelogram DEFG, the measure of angle D is $(4y - 20)^{\circ}$ and the measure of its opposite angle F is $(2y + 10)^{\circ}$. Find the value of $y$. ___
9. In parallelogram WXYZ, angles W and X are adjacent. If $m\angle W = (x + 15)^{\circ}$ and $m\angle X = (3x + 5)^{\circ}$, what is the measure of angle W?
10. In parallelogram ABCD, $m\angle A = (3x + 10)^{\circ}$ and $m\angle C = (5x - 50)^{\circ}$. What is the measure of angle B?