pitnerv14
pitnerv14
22-08-2017
Mathematics
contestada
Can someone help me with 3 a and b?? Thank you
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Banabanana
Banabanana
22-08-2017
m∠ADB + m∠BDC = m∠ADC [
angle addition postulate]
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°
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