Instructional Video7:18
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Heron's Formula - Perimeter

9th - Higher Ed
Did you know that we can calculate the area of triangle even without it's height? Heron from Alexandria, derived a formula to calculate the area of triangle by using only the sides of the triangle and by using the perimeter of the...
Instructional Video4:32
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Measuring Perimeters of Quadrilaterals

9th - Higher Ed
The video is a math lesson on how to measure the perimeter of different types of quadrilaterals, including parallelograms, rectangles, squares, rhombuses, trapeziums, and kites. The teacher explains how to use formulas and shortcuts to...