Question

Quadrilateral abcd is an isosceles trapezoid with ad||bc the vase angles are

Answer 1

D because the parallel sides are both considered bases

Answer 2

Option: D is true.

∠A and ∠D, as well as ∠B and ∠C.

Explanation:

In Euclidean geometry, an isosceles trapezoid is a convex quadrilateral with a line of symmetry bisecting one pair of opposite sides. It is a special case of a trapezoid. Alternatively, it can be defined as a trapezoid in which both legs and both base angles are of the same measure.

Hence, the two bases of trapezoid are:

AD and BC.

Hence, the base angles are:

∠A and ∠D, as well as ∠B and ∠C.

Hence, option: D is true.