Area of Triangles and trapezoids

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Presentation transcript:

Area of Triangles and trapezoids Section 10.1 B

Warm Up Find each missing side. 1. 2.

Acute Triangle: Height is IN the triangle. Examples: Find the area of the triangles.

Right Triangle: Height is ON the triangle.

Obtuse Triangle: Height is OUTSIDE the triangle.

Find the exact area of each triangle Find the exact area of each triangle. Exact means no rounding or decimal answers. Simplify all radicals.

Area of a Trapezoid

Find the area of each trapezoid.

Find the height of a trapezoid with an area of 287 in2 and bases of 38 in and 44 in.

Find b2 of the trapezoid, in which A = 231 mm2.

Midsegment of a Trapezoid b1 Median is (b1 + b2)/2 Area is (Median) (height) Median b2

Find the area of the trapezoid in simple radical form. - -