1. 10.2 Area of a Triangle
Objective: Find the area of a
triangle.
Mr. Williams GESD jwilliams@gesd40.org
Image: 'Orange geometry or 3 triangles'
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2. Base of a triangle ­
the length of any one of the
triangles sides.
Image: 'Staten Island Memorial'
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3. Height of a Triangle ­
perpendicular distance
between the side whose
length is the base and vertex
opposite that side.
Image: 'neon bordered triangle'
www.flickr.com/photos/37996577120@N01/161974259
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4. bh
Area = 2
Height
Height
Base
Base
Image: 'Geodesic Afternoon'
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5. bh
Area = 2
10 m
20 m
Image: 'Geodesic Afternoon'
www.flickr.com/photos/36543076@N00/196759239
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6. bh
Area = 2
10 ft
20 ft
Image: 'Geodesic Afternoon'
www.flickr.com/photos/36543076@N00/196759239
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7. Find the area of the red figure.
3 m
8 m
10 m
Image: 'Geodesic Afternoon'
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