if you are talking about regular polygons, then nothing has an obtuse angle. otherwise, pretty much any shape can have an obtuse angle
-- No right triangle, acute triangle, or equilateral triangle has an obtuse angle in it. -- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it .
Any obtuse triangle, any quadrilateral other than a square or rectangle, any regular polygon with 5 or more sides as well as most (but not all) irregular polygons of 5 or more sides.
A concave polygon has at least one interior angle greater than 180 degrees. A convex polygon has none of those.
91 degrees
if you are talking about regular polygons, then nothing has an obtuse angle. otherwise, pretty much any shape can have an obtuse angle
An obtuse triangle has 1 obtuse angle and 2 different acute angles and they all add up to 180 degrees
An obtuse triangle has 1 obtuse angle and 2 different acute angles and they all add up to 180 degrees
obtuse triange
The answer to this would be any acute polygon, such as an equilateral triangle. The definition of acute polygons is that no angle in the polygon is greater than or equal to 90 degrees.
-- No right triangle, acute triangle, or equilateral triangle has an obtuse angle in it. -- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it .
You cannot "solve the kinds of polygons". There are essentially three types of polygons: Regular polygons in which each angle is the same and each side is the same. Irregular convex polygons in which at least one angle or one side are different but there are no reflex angles. Concave polygons in which there is at least one reflex angle. Convex and concave are usually defined in terms of whether or not the enclosed space is closed, but the above definitions may be simpler to grasp.
Any obtuse triangle, any quadrilateral other than a square or rectangle, any regular polygon with 5 or more sides as well as most (but not all) irregular polygons of 5 or more sides.
Yes, because the angles have to add up to 360º, at least one angle has to be obtuse.
A concave polygon has at least one interior angle greater than 180 degrees. A convex polygon has none of those.
-- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it . -- Right triangles, acute triangles, and equilateral triangles don't have any obtuse angles in them.
It needs at least 1 obtuse angle. Usually you can only have one obtuse angle, so the rest would be acute.