4.3 similar triangles
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4.3 Similar Triangles
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SimilaritySimilar Triangles
Similar Polygons
HomeworkPage 150 #5, 6, 8, 10, 12, 18
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Similar TrianglesWe say that two triangles are similar:
if their side lengths reduce to the same threeterm ratio.
corresponding angles must also be equal.
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Example 1:
Note: figures are not drawn to scale.
Find the length of:
a) TW b) SW
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Example 2:
Find the measure of:
a) DE b) FE
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Examples:
4.3 Similar Triangles
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4.3 Similar Triangles
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Turn to page 152 in your textbook question 14.
Erin, who is 1.60 m tall, casts a shadow that is 1.25 m long. Her shadow extends to the end of a tree's shadow when she stands 4.75 m from the tree. What is the height of the tree?
1.6 m
4.75 m 1.25 m