1.

11311x-101383x+6

Answer»

sum of angles for a Pentagon is 540° so on addition of all the angles => 11x-10+3x+6+138°+85-x+113 = 540° => 14x -x + 332 = 540° => 13x = 540-332= 208 => x = 16°

so , the other angles are 3x+6 = 54°11x-10 = 166° 85-16 = 69°



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