1.

Please answer the (b) part of the question.​

Answer»

ANSWER:

x=140°

y=90°

Step-by-step EXPLANATION:

LET the EXTERNAL angle be a

since, a=90°

therefore, y=90°

since, x+y+70°+60°=360°(angle sum property of a quadrilateral)

→x+90+130=360

→x=360-220

→x=140°



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