Name three quaderlateral that only sometimes have right angle

Name three quaderlateral that only sometimes have right angle
Rhombus, trapezoid, and parallelogram

Three quadrilaterals that only sometimes have right angles would not be a rectangle or square so any other should do it.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?