8-1.5 Proving Triangles Similar

# 8-1.5 Proving Triangles Similar - ∆ and the lengths of...

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8.5 Proving s ~ Pg 488

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REMINDER!!!! In section 8.4, we had AA~ post Meaning, two corresponding 2245 <‘s
Thm 8.2 Side-Side-Side ~ (SSS~) Thm If the lengths of the corresponding sides (all 3 pairs) of 2 s are proportional, then the s are ~. A B C X Y Z XYZ ABC then YZ BC XZ AC XY AB if = = ~ ,

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Which of the following 3 s are ~? Q R S O N P K L M 30 10 25 7 5 3 6 18 15
Example Cont. 2200 QRS~ NOP? 2200 NOP~ KLM? 5 25 3 10 7 30 = = 1 5 3 10 7 30 = = 15 5 6 3 18 7 = = 3 1 2 1 18 7 = =

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Example cont 2200 QRS~ KLM? 6 10 15 25 18 30 = = 3 5 3 5 3 5 = =
Thm 8.3 Side-Angle-Side ~ (SAS~) thm If an of one is 2245 to an of a 2nd

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Unformatted text preview: ∆ and the lengths of the sides including these ∠ ‘s are proportional, then the ∆ s are ~. A C B 21 15 X Y Z 14 10 If ∠ C 2245 ∠ Z and YZ BC XZ AC = Then ∆ ABC~ ∆ XYZ Example How wide is the river? Just pretend here for a second L M X N Q P 5ft 42ft 8ft 42 8 5 = x 8x=210 X=26.25ft Example How high is the Buddha? A B C D E __ __ __ ( ) 28 8 6 = x 8x=168 X=21ft 8 ft 28 ft Person is 6 ft tall Assignment Assignment...
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8-1.5 Proving Triangles Similar - ∆ and the lengths of...

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