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posted by monique on Sunday, August 8, 2010 at 7:52pm.
In an isosceles triangle, the measure of the vertex angle is 4x. The measure of each base angle is 2x + 10. What is the actual measure of the vertex angle?
4X + 2(2X + 10) = 180 8X = 160 X = 20 Deg.
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