For an isosceles trapezoid, the sum of the angles for a smaller base is 210 degrees. Find the corners of the trapezoid.

The sum of the angles of any quadrangle is 360 °, so the sum of the angles for a larger base is 360 – 210 = 150 °.

In an isosceles trapezoid, the angles at the bases are equal in pairs, which means that each of the angles at the smaller base is 210/2 = 105 °, each of the angles at the larger base is 150/2 = 75 °.



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