question 17 and 18 only

label Mathematics
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Nov 18th, 2014

17.

10x-3 =8x+12 ( congruence of angles because of congruence of triangles)

10x-8x=12+3

2x=15

x= 15/2 =7.5

18.

8x+12 = 60+12 =72 degrees

angle LMN = 180-(72+90)=180-162=18 degrees



Nov 18th, 2014

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