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Question

One angle of a quadrilateral is 100°. What is the sum of the remaining three angles of the quadrilateral?


Solution

Let the first angle of the quadrilateral be 1, second angle be 2, third angle be 3 and fourth angle be 4
We know that the sum of the angles of a quadrilateral is 360°
m 1 + m 2 + m 3 + m 4 = 360°    
m 2 + m 3 + m 4 = 360° - 100°  = 260o
Therefore, sum of the remaining three angles of the quadrilateral = 260o

Mathematics
Mathematics
Standard VII

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