shape has 4 side: at least one angle measure90 is it a.righ triangle .b.right trapezod c.right triangle b.rhombus

Answer 1

If it has four sides, it cannot be any form of triangle.
If at least one angle measures 90degrees, then it could be a right trapezoid, or a rhombus, or it could be neither.

There is not enough information to choose any of the four choices. Check the question please.

Answer 2

Please proofread your choices and repost -- along with your answer.