pizza slices
Some have one obtuse interior angle, others have none. A triangle can have no more than one obtuse angle.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. In addition there are concave octahedra. Some of these will have no obtuse angles, others will have several.
Two.
obtuse,cute,right,and straight angles
Table
pizza slices
some triangles and rhombuses. trapoziods do not have acute angles it has obtuse angles. :)
Go to google.com/images and search "obtuse isosceles triangle", that should get you some good examples.
Some have one obtuse interior angle, others have none. A triangle can have no more than one obtuse angle.
The hands on a clock!
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. In addition there are concave octahedra. Some of these will have no obtuse angles, others will have several.
You are a trapezoid (or trapezium in some regions). In a trapezoid, it can have two acute angles and two obtuse angles, which fits your description. The specific arrangement of the angles can vary, but the presence of two acute and two obtuse angles is characteristic of this type of quadrilateral.
Two.
obtuse,cute,right,and straight angles
In normal geometry, it's not possible to make a triangle with two obtuse angles. It is possible to make a triangle with two obtuse angles in spherical geometry -- it's a kind of "spherical triangle". It is possible to make a triangle with two obtuse angles in some kinds of non-Euclidean geometry -- it's a kind of "non-Euclidean triangle".
An obtuse angle is an angle between (but not including) 90 and 180 degrees, so some obtuse angles would be 91 degrees, 179 degrees, and 142 degrees.