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Area of a Triangle
The area of a triangle = ½ the area of the surrounding
rectangle/parallelogram
height
base
Area of a triangle = ½ base x height
Area of a Triangle
The area of a triangle = ½ the area of the surrounding
rectangle/parallelogram
height
base
rectangle area = 2 + 2
triangle area = ½ rectangle area
Area of a triangle = ½ base x height
Find the area of the following triangles.
Area = ½ b x h
12 cm
9 cm
16 cm
8 cm
10 cm
Area = ½ x 8 x 9
= 60 cm2
= 36 cm2
4.5 m
Area = ½ x 10 x 12
14 cm
Area = ½ x 14 x 16
= 112 cm2
Area = ½ x 3.2 x 4.5
= 7.2 m2
3.2 m
Area = ½ x 7 x 5
= 17.5 mm2