It is just an irregular quadrilateral.
No, a quadrilateral can't have three acute angles and one right angle. The angles of a quadrilateral must total 360. The three other angles of a quadrilateral with one right angle would then have to total 270 degrees. If all three were acute (less than 90 degrees), they could not total 270.
octegon
A kite can satisfy those criteria.
parallelogram with one diagonal
Impossible. You cannot have an obtuse angle without an acute angle in a quadrilateral.
It is just an irregular quadrilateral.
Four SIdes
No, a quadrilateral can't have three acute angles and one right angle. The angles of a quadrilateral must total 360. The three other angles of a quadrilateral with one right angle would then have to total 270 degrees. If all three were acute (less than 90 degrees), they could not total 270.
octegon
A kite can satisfy those criteria.
A quadrilateral may have zero, one, two, or three acute angles.
No, It is not possible to have a quadrilatera with four acute angles because the addition of four angles for quadrilateral = 360 & acute angle is less than 90 degree
jobby
parallelogram with one diagonal
Non Euclidean.
isolese triangle