Math CST 5

Area of Figures Geometric Probability Problem Solving

Figure Name Area

Triangle base x height 2

Quadrilateral length x width

Circle П r 2

Trapezoid B + b h 2

The area of a sector or segment of a circle depends on the length or angle of the arc.

E.g. if the arc angle was 180 ۫ ۫,then you would have ½ of thearea of the full circle.

Page 164, Q. 1, 3 , 9, 10

• Area = bcSinA 2

b

c

a

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