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Published byIris Fisher Modified over 6 years ago
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Find the missing parts of a triangle whose sides are 6, 9, and 12
Monday, February 9th Find the missing parts of a triangle whose sides are 6, 9, and 12
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Lesson 6.2 part three Area of Triangles
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But what if we don’t know some of the information?
We should all know the basic formula to find the area of a triangle (Area = ½ x base x height) But what if we don’t know some of the information?
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C A c a b h C A c a b bsinC B B
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Use the appropriate oblique triangle formula
When you are given the case of SAS (two sides and the angle between them)… Use the appropriate oblique triangle formula
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Find the area of each triangle:
b = 25, c = 12 and A = 46 C = 112, a = 16 and b = 38
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Find the area of a triangle where b = 16, c = 40 and C = 71
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If you know SSS (three sides of a triangle), find the area by using Heron’s Formula
where
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Find the area: a = 16, b = 24, c = 31 a = 120, b = 202, c = 306
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Homework: Page 434 #23-27 Page 441 #17-21
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