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For an isosceles triangle with vertex 46 degrees, the sum of the remaining two base angles is 180-46 = 134 degrees. Base angles are equal because it's isosceles, so each angle is half of their sum. 134/2 = 67 degrees.

Thus, any isosceles trapezoid formed inside that isosceles triangle by drawing parallel lines to the triangle's base, will have base angle measures of 67 degrees, which are triangle's base angles.

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โˆ™ 2012-12-17 16:27:09
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Q: What is the measure of an acute base angle of the trapezoid of an isosceles triangle vertex of 46 degrees?
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