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A pentagon with area 40 has equal sides but not necessarily equal angles. The sum of the five perpendicular distances from a point inside the pentagon to the sides of the pentagon is 16. The side length of the pentagon
A pentagon with area 40 has equal sides but not necessarily equal angles. The sum of the five perpendicular distances from a point inside the pentagon to the sides of the pentagon is 16. The side length of the pentagon
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The point inside the pentagon forms 5 triangles with the 5 sides of the pentagon. Those perpendicular lines would be the height of the triangles.
Let the distances of the perpendicular line segments be p1, p2, p3, p4 and p5 and the side length be s.
p1+p2+p3+p4+p5= 16
1/2(s*p1+s*p2+s*p3+s*p4+s*p5) = 40
1/2s(p1+p2+p3+p4+p5) = 40
1/2s*16 = 40
s= 80/16 = 5