a(n)_l shaped hexagon steel bar
It is a set square
Yes for a given medium critical angle is fixed as mu = 1/ sin C mu is the refractive index of the material and C is the critical angle.
A protractor is a tool that may be used to measure an angle. The measure of the angle exists irrespective of the tool that is used to measure it. In the same way that you have a height and your height is a [mainly] fixed amount and whether it is measured with a rule or a tape measure or a laser range finder does not affect your height!
An angle bead is a bead worked on or fixed to the angle of any architectural work, for example protecting the angle of a wall.
A rotation turns a shape through an angle about a fixed point
Twice as large
A rotation turns a shape through an angle around a fixed point usually on the Cartesian plane
If the radius of a circle is tripled, how is the length of the arc intercepted by a fixed central angle changed?
Measure the angle in a plane perpendicular to the axis of rotation, between the position of a fixed point at the start and end of the rotation.
The angle between two planes when the planes intersect at a point is the acute angle fixed by the normal vectors of the planes.
A rotation.
theodolite are use in construction calculate the angle and horizantal distance and for fixed the point