29-10-2019
Mathematics

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math expert in polygon angle

math expert in polygon angle class=

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Moonnose Moonnose

29-10-2019

Answer:

50°

Step-by-step explanation:

The internal angles on a quadrilateral sum to 360.

So x+10+2x+x+3x=360

7x+10=360

7x=350

x=50

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