Perimeter and Area

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Perimeter and Area
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Objectives

• Calculate the area of given geometric figures.
• Calculate the perimeter of given geometric
  figures.
• Use the Pythagorean theorem to find the lengths
  of a side of a right triangle.
• Solve word problems involving perimeter, area,
  and/or right triangles.

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Vocabulary

• polygon
• perimeter
• area
• trapezoid
• parallelogram
• triangle
• rectangle

• circle
• circumference
• radius
• diameter
• legs (of a right triangle)
• hypotenuse

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Area Formulas
Triangle
Herons Formula for Area of Triangle
Rectangle and Parallelogram
Trapezoid
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Circle Formulas
Circumference (Perimeter)
Area
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Pythagorean Theorem
For right triangles
c
b
a
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Find the perimeter and area of the figure below
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Find the area of the figure below
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Find the area of the figure below
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Find the area of the figure below
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Find the area of the figure below
12
Find the area of the figure below
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Find the length of the third side of the triangle
below
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Find the perimeter and area of the circle below
15
Find the perimeter and area of the semicircle
below
16
Walk 100 yards south, then 120 west and then 30
yards south. How far from the original starting
point are you?