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Question

In the adjoining fig 2.66, show that A +B +C + D +E + F = 360°

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Solution

In AEC, we have,A+E+C = 180° (Sum of the measure of angles of a triangle) ...(i)In DFB, we have,D+F+B = 180° (Sum of the measure of angles of a triangle) ...(ii)Adding (i) and (ii), we have,A+E+C +D+F+B = 360°

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