A circle does not have angles in the traditional sense, as angles are formed by the intersection of two lines. However, if considering angles formed by radii and chords within the circle, it is possible to have infinitely many obtuse angles depending on the selected points on the circumference. Thus, the answer can be considered as infinite obtuse angles in a circle.
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.
A rhombus have 2 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.
There are no angles they are all obtuse angles
A trapezium has one or two obtuse angles.
There are 3 obtuse angles in a heptagon.
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.