Homework Help: Geometry

Posted by Lissa on Wednesday, September 21, 2011 at 11:40am.

find the measure of each angle of an isosceles trapezoid if two of the angles has measures in the ratio of 2:3.

Geometry - Reiny, Wednesday, September 21, 2011 at 11:43am
the sum of the 4 angles is 360°
But they come in equal pairs.
let the larger be 3x and the smaller be 2x
3x + 2x = 180
x = 36

so the angles are 72° and 108°

check: 72:108 = 2:3
72+72+108+108 = 360
Geometry - Lissa, Wednesday, September 21, 2011 at 11:59am
thank you reiny
Geometry - Reiny, Wednesday, September 21, 2011 at 3:27pm
the sum of the 4 angles is 360°
But they come in equal pairs.
let the larger be 3x and the smaller be 2x
3x + 2x = 180
x = 36

so the angles are 72° and 108°

check: 72:108 = 2:3
72+72+108+108 = 360

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