NAME _____________________________________________ DATE ____________________________ PERIOD _____________
9.1 Day 1 Worksheet
Areas of Parallelograms and Triangles
Find the perimeter and area of each parallelogram or triangle. Round to the nearest tenth if necessary.
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9. The height of a parallelogram is 10 feet more than its base. If the area of the
parallelogram is 1200 square feet, find its base and height.
10. The base of a triangle is one half of its height. If the area of the triangle is 196 square
millimeters, find its base and height.
11. Find the height of the parallelogram if the area is 7.5 m2
12. Find the height of the rectangle if the area is 10x2 ft2
13. Find the area & perimeter of the rectangle with length of (x + 2) in and width of
(x – 1) in.
14. Find the area of an equilateral triangle whose perimeter is 36 cm.