kindly help me with this problem
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a+b+c+d=360
(sum of all angles of a quad)
a+d=360-(b+c) eq1
1/2 a+1/2 d+apd=180
apd=180-1/2(a+d ) eq2
From eq1 and eq 2
apd=180-1/2 (360-(b+c))
apd=1/2 ( b+c).
Hope this helps u
vrinda2882:
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