Find the value of a if a+10 , 3a+10 , 5a+10 and 3a-10 are the angles of a quadilateral. Also find the measure of each angle.
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we know that all the sum of angles of a quadrilateral is 360 degree
therefore ,3a + 10 + 5 a+ 10 + 3a - 10 + a + 10 is equal to 360 degree
12a+20=360
12a=340
a=28. 3
. so the angles are
therefore ,3a + 10 + 5 a+ 10 + 3a - 10 + a + 10 is equal to 360 degree
12a+20=360
12a=340
a=28. 3
. so the angles are
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