A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
If a = c = 1, b = d = 7, and the blue angle = 74°, what is the area of this parallelogram?
3 | |
7 | |
12 | |
18 |