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09-11-2020
Mathematics

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HELPZ. Find value of x and all the measures of all angel

HELPZ Find value of x and all the measures of all angel class=

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Аноним Аноним

09-11-2020

Answer: x = 40

have: ∠A + ∠B + ∠C + ∠D = 180°

⇔ x + 6 + x + 4 + x +10 + x = 180°

⇔ 4x + 20 = 180

⇔ x = (180 - 20)/4

⇔ x = 160/4 = 40

Step-by-step explanation:

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