it has No acute or obtuse angles
It has two obtuse angles
A trapezium has one or two obtuse angles.
An obtuse triangle can have no right angles, and has two equal angles.
A regular octagon has 8 interior obtuse angles.
it has No acute or obtuse angles
It has two obtuse angles
It has a straight, right, acute, and obtuse angles.
In geometry, angles are created by the intersection of lines or of line segments. A curve is not an angle, and a semi-circle (or complete circle) consists only of one continuous curve. There are no angles as such. If you like, you can conceive of a curve as a collection of infinitely many angles. But you can never see them individually, they are only seen as a group. They are not obtuse (or acute) angles in the normal sense of the term.
A rhombus have 2 obtuse angles
There are no angles they are all obtuse angles
There are 3 obtuse angles in a heptagon.
A trapezium has one or two obtuse angles.
An obtuse triangle can have no right angles, and has two equal angles.
One and the two others are acute angles
A trapezium has 2 obtuse and 2 acute angles.
A regular octagon has 8 interior obtuse angles.