10.2 Area of a Triangle and Trapezoids. Definition: Area of a Triangle h b Height Base h b Height Base h b Height Base The area of a triangle is one half.

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Presentation transcript:

10.2 Area of a Triangle and Trapezoids

Definition: Area of a Triangle h b Height Base h b Height Base h b Height Base The area of a triangle is one half the product of the base and the height of the triangle. or

Area of a Trapezoid H=height (marked by right angle) B= base (perpendicular to height)

Find the area Problem 1Problem 2

Finding Area of Irregular Figures Strategy 1 Find area of whole figure Find area of cut out figure Subtract areas Strategy 2 Divide the figure into shapes that we can find the area of Find the area of the shapes Add up the areas

Examples: Find Area Strategy 1Strategy 2

Homework Page 512 (1-6, 8-19 all)