SOLUTION: The angle of a quadrilateral are taken in the order 2a,3a,6a,and 7a, find 'a' and calculate the measure of the largest angle The angle in a Pentagon are x,2x,3x,4x,and 5x fi

Algebra ->  Polygons -> SOLUTION: The angle of a quadrilateral are taken in the order 2a,3a,6a,and 7a, find 'a' and calculate the measure of the largest angle The angle in a Pentagon are x,2x,3x,4x,and 5x fi      Log On


   

Question 1165736: The angle of a quadrilateral are taken in the order 2a,3a,6a,and 7a, find 'a' and calculate the measure of the largest angle


The angle in a Pentagon are x,2x,3x,4x,and 5x find the value of x
Answer by Boreal(15235) About Me  (Show Source):
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internal angles of a quadrilateral add to 360
internal angles of a pentagon add to 540.
the first is 2a+3a+6a+7a=360=18a
a=20 degrees
so angles are (in deg), 40, 60, 120, and 140
for the second
15x=540
x=36
the angles are 36, 72, 108, 144, and 180