A certain type of a quadrilateral can have 3 obtuse angles providing that all of its 4 interior angles add up to 360 degrees
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parallelograms, rhombuses, & hexagons
Parallelogram, rhombus, trapezium and any other q/lateral that is neither a square nor a rectangle.
No not never can a triangle have 3 obtuse angles but it can have 3 acute angles
of course, remembr that quadrilaterals have four sides... .. .. .. .. .. . . .. ...
Every parallelogram and most trapezoids have.Oh wait! It seems to me that every quadrilateral, regular or irregular, that'snot a rectangle and not concave, must have at least two obtuse angles.