In a real star, no.
In a 2-dimensional star-shape, no.
In 3-dimensional star-shapes, yes, there can be.
5
Any regular polygon with 5n sides, or any 5n pointed star (where n is an integer)
a circle
Yes. Rectangles have four right angles.
A shape with 4 right angles would be a square or rectangle. A trapezoid does not have any right angles..
5
No, if it has right angles it is a special case, such as rectangle, but in general it does not have to have any right angles
Any regular polygon with 5n sides, or any 5n pointed star (where n is an integer)
Any regular polygon with 5n sides, or any 5n pointed star (where n is an integer)
the answer is 5 each tip of the star is a acute angle and each angle on the inside of the star is an obtuse angle. there are 5 obtuse angles and no right angles.
a circle
No, a cylinder does not have any right angles because it has two circles and a tube comprising it so as they do not have any right angles, the cylinder will not either.
Yes. Rectangles have four right angles.
A shape with 4 right angles would be a square or rectangle. A trapezoid does not have any right angles..
Yes a square always has 4 right angles but a rhombus never has any right angles.
No, rectangles do not have any acute angles. All angles in a rectangle are right angles, measuring 90 degrees. Therefore, the angles in a rectangle are either right angles or supplementary, but they cannot be acute.
A polygon with six or more sides, in which four of the angles are right angles and the other angles are not. These others are of any type - as required. It cannot be a pentagon because, if 4 angles are right angles, the fifth would be 180 degrees!