Question

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Answer 1

Answer:

In quadrilateral A+B+C+D= 360

105+80+70+x=360

x=360-255

x = 105.....

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Answer 2

Answer:

angleD = 105°

Step-by-step explanation:

Sum of 4 angles of a quadrilateral is 360°

Therefore measure of fourth angle = 360-(105+80+70)

= 105°

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