SECTION 7.4SIMILAR TRIANGLES
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I) REVIEW: ANGLE PROPERTIES
Corresponding Angles areEqual
Interior Angles on theSame Side of Transversalare Supplementary
Exterior Angles on theSame Side of Transversal
are Supplementary
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II) SIMILAR TRIANGLES
Two triangles are similar when all threecorresponding angles are equal (AAA)
The Triangles will have the same shape, but canhave different sizes
When two triangles are similar, correspondingsides will be in ratio
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EX: GIVEN THE FOLLOWING TRIANGLES,FIND THE MISSING SIDES:
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EX: SOLVE FOR ‘X”
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Split the triangle into two
separate triangles
Make an equation from theratios
“x” can not benegative
So – 7 is notpossible
So “x” must beequal to 6