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Inessa [10]
3 years ago
5

Pls help, with explanation :) I will give brainliest

Mathematics
1 answer:
anygoal [31]3 years ago
4 0

Answer:

C,110°

Step-by-step explanation:

when the angle on circumference=50°

then the angle at center=2×50=100°

other angles of this triangle are equal and each=1/2(180-100)=1/2×80=40

so angle of quadrilateral=30+40=70°

as opposite angles of a cyclic quadrilateral are supplementary.

so y+70=180

y=180-70=110°

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Equation

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3 0
3 years ago
Read 2 more answers
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