A hexagon has angles that measure 145.8, 118.5,151.6,100.4,130.8 and u. What is u?
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We'll recall the fact that the sum of all interior angles of a regular polygon is:
S = (n-2)*180, where n is the number of sides.
A hexagon has 6 sides, therefore the sum of internal angles is:
S = 4*180
S = 720 degrees
The angles of hexagon are given, except the measure of u.
145.8 + 118.5 + 151.6 + 100.4 + 130.8 + u = 720
u = 720 - (145.8 + 118.5 + 151.6 + 100.4 + 130.8)
u = 72.9 => u = 73.3 degrees
The missing angle of hexagon, u, measures 73.3 degrees.
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