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earnstyle [38]
3 years ago
14

I need help ASAP pls

Geography
1 answer:
gizmo_the_mogwai [7]3 years ago
5 0

Answer:

m< B = 120°

Explanation:

The sum of the angles of a trapezoids 360°

m<c=m<D= 60°

60°+60°+2x=360°

120°+2x=360°

2x=360°–120°

2x=240°

x=240/2

x=120°

So : m<B =120°

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