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This depends on the polygon.For a triangle (3-sides) : maximum 1 obtuse angle.Quadrialteral (4-sides): maximum 3 obtuse angles.For polygons with more sides, it is possible for all angles to be obtuse.
All triangles have 3 sides.
zero
By definition, all triangles have 3 sides.
None normally but if it is in the shape of an isosceles triangle then it will have 2 equal sides.
This depends on the polygon.For a triangle (3-sides) : maximum 1 obtuse angle.Quadrialteral (4-sides): maximum 3 obtuse angles.For polygons with more sides, it is possible for all angles to be obtuse.
None or two sides.
An obtuse triangle is a triangle with one angle greater than 90 degrees. Since a perpendicular side is a side that forms a right angle with another side, an obtuse triangle can have 0 perpendicular sides if all its angles are obtuse. However, it can also have 1 perpendicular side if one of its angles is a right angle.
All triangles have 3 sides.
zero
10
3 sides because every tiangle has 3 sides.
By definition, all triangles have 3 sides.
A pentagon: 5 sides.
none
None normally but if it is in the shape of an isosceles triangle then it will have 2 equal sides.
it has one obtuse angle and none of the sides are congrent