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Vinil7 [7]
3 years ago
13

Please answer these but do it step by step, thanks

Mathematics
1 answer:
max2010maxim [7]3 years ago
3 0
M∠ADB + m∠BDC = m∠ADC  <span>
x + x + 10 = 60 
2x + 10 = 60
2x = 60 - 10
2x = 50
x = 50/2
x = 25

a
m</span>∠ADB = x = 25°

b 
m∠BDC = x + 10 = 25 + 10 = 35°

с
 Angle Addition Postulate
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