christopherholmes
02.12.2020 •
Mathematics
Pls help find x of this and help me understand how to find it :)
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Ответ:
180=42+x+76+x+78
180=2x+196
2x=-16
x=-8
Ответ:
The lines marked with purple arrows are parallel to each other.
Therefore,
x°+(x+40)°= 180° ( co-interior angles)
2x°=180°-40°
2x°=140°
x°=70°
the labelled angles are 70° and 110°