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Area of a Triangle. Activity: Draw a rectangle measuring 6cm by 3cm using a ruler in your notebook Draw a triangle inside the rectangle so that: a) at least one side of the triangle matches up with one side of the rectangle
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Area of a Triangle • Activity: • Draw a rectangle measuring 6cm by 3cm using a ruler in your notebook • Draw a triangle inside the rectangle so that: • a) at least one side of the triangle matches up with one side of • the rectangle • b) the third vertex is on the opposite side of the rectangle • c) shade the triangle • d) estimate the area of the triangle • 3) Cut out the rectangle then cut out the triangle. • 4) Arrange the unshaded pieces to cover the triangle. • 5) What is the area of the triangle and how do you know?
What is the formula for the area of a parallelogram? = A = b x h What is the connection between a parallelogram and a triangle? = a triangle is ½ a parallelogram What would be the formula for the area of a triangle? A = (b x h) ÷ 2 Text page 145-147 Pizazz D55-56 x