Please answer these but do it step by step, thanks

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asked Sep 5, 2018 5.8k views

1 Answer

Kanaverum · Answer 1 · 2018-09-10T23:49:12+0000

m∠ADB + m∠BDC = m∠ADC
x + x + 10 = 60
2x + 10 = 60
2x = 60 - 10
2x = 50
x = 50/2
x = 25

a
m∠ADB = x = 25°

b
m∠BDC = x + 10 = 25 + 10 = 35°

с
Angle Addition Postulate

Please answer these but do it step by step, thanks

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