find the value of x angle a is equal to 105 angle b is equal to 70 degree angle c is equal to 110 angle d is equals to x
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Step-by-step explanation:
abcd is a quadrilateral and the angles of a quadrilateral sum up to 360°
therefore angle a + angle b + angle c + angle d = 360°
angle a + 105 + 70 + 110 = 360°
angle a + 285 = 360°
angle a = 360 - 285
angle a = 75°
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