Vocabulary Perimeter The sum of all sides of the shape. Area
The total occupied space of a shape in units squared.
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Area of Triangles Base (b) Height (h)
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We know how to find the area of a square or a rectangle
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What if we cut the shapes in half?
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Example = = 12 units squared
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Try
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One More
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Notice all of our examples have been right triangles In other
triangles, you must make sure you are using the height. Height is
always perpendicular to the base
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Find the Area 3 in 7 in 5 in
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Find the Area 6 in 12 in 10 in
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.and these guys make millions
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Finding the Area of Other Polygons
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We Know How to Find the Area of Several Figures Already
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Finding the area of a rhombus and parallelogram They are just
squares and rectangles pushed over Area = 4 un Notice that we are
not using the length of the angled side! 3
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Trapezoid Formula for area
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Trapezoids
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Area of Other Polygons
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Sometimes Things Are Not Perfect or We are Missing Vital
Information Divide the shape into shapes we can use