Areas of Triangles Trapezoids, Rhombuses, and Kites

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Areas of Triangles Trapezoids, Rhombuses, and
Kites
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Derive formulas for the areas of triangles,
trapezoids and kitesApply area formula to solve
problemsDevelop cooperative behavior
Objectives
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Area of a TriangleThe area of a triangle is
half the product of a base and the corresponding
height.
A 1/2 bh
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The base of a triangle is any of its sides. The
corresponding height is the length of the
altitude to the line containing that base.
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Find the area.
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Trapezoids Recall that the bases of a trapezoid
are the parallel sides and the legs are the
nonparallel sides. The height of a trapezoid is
the perpendicular distance h between the bases.
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Area of a Trapezoid The area of a trapezoid is
half the product of the height and the sum of the
bases.
A 1/2 h (b1 b2)
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Find the area of each figure. Leave it in
simplest radical form.
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Find the area of each figure. Leave it in
simplest radical form.
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Area of a Rhombus or Kite The area of a rhombus
or a kite is half the product of the lengths of
its diagonals .
A 1/2 d1 d2
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Find the area of each figure. Leave your answer
in simplest radical form.
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Find the area of each figure. Leave your answer
in simplest radical form.
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