Assume that the figure is a trapezoid. All trapezoids are quadrilaterals. All quadrilaterals' interior angles add up to 360° because any n-gon's interior angles add up to 180(n-2)°. We are given that the trapezoid has three right angles. All right angles are 90°, thus these right angles have a total measure of 270°. We can conclude fourth angle must be 90°. If it has four right angles, it is a rectangle. Rectangles have two sets of parallel sides. However, trapezoids have exactly one set of parallel sides. Alas, our figure cannot be a trapezoid.
Not possible
trapezoid is a quadrilateral with 4 angles and 4 sides
which means the interior measure =360
if 3 angles are right the 4th angle must be a right angle
a trapezoid does not have 4 right angles,it only has one
pair of parallel sides
hope this helps
