It is a section formed by a plane at right angles to the axis of the cone.
Circle, cone, cylinder, sphere and equilateral triangle for example.
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..
a cone doesn't contain any right angles fool !
A cone does not have right angles.
There are no 90 degree angles in a cone. This capital 'L' shows an example of a right angle.
Nope
It is a section formed by a plane at right angles to the axis of the cone.
Circle, cone, cylinder, sphere and equilateral triangle for example.
By "double right cone" do you mean one right cone sitting normal with another right cone upside-down atop the first cone? If so, then we you take that double right cone and intersect it with a plane at different angles, you get the conic sections. (i.e. hyperbola, parabola, elipse, circle)
A cone has no acute angles because a cone is a 3D shape and not a 2D.
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
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.