a= 60°
b= 45°
c= 45°
I apologise, I can't really explain my solutions properly since I haven't done this in months..
Upper angles:
180 - 60= 120
75° is the same from each side of the 180° line so above 75° is also 75°
60° + 75°= 135°
180° - 135°= 45°
Lower angles:
60° is the same from each side so a= 60°
45° is also the same from each side so b= 45°
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Answers & Comments
a= 60°
b= 45°
c= 45°
I apologise, I can't really explain my solutions properly since I haven't done this in months..
Upper angles:
180 - 60= 120
75° is the same from each side of the 180° line so above 75° is also 75°
60° + 75°= 135°
180° - 135°= 45°
c= 45°
Lower angles:
60° is the same from each side so a= 60°
45° is also the same from each side so b= 45°