Question

Solve the problem solve for x

Answer 1

x=27

Explanation:

We know that the sum of the internal angles of a polygon is the number of sides less two times 180.

There are 7 sides to the figure, so (7-2)*180 = 900

120 + 129 + 138 + 135 + (2x+73) + 128 + 123 = 900

2x + 846 = 900

2x = 54

x=27

Answer 2

Sum of a heptagon= 900°

• 2x+73+128+123+120+129+138+135=900
• 2x+846=900
• 2x=54
• x=27

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