A right angle is an internal angle which is equal to 90°
This is a right angle
Note the special symbol like a box in the angle. If we see this, it is a right angle. The 90° is rarely written in. If we see the box in the corner, we are being told it is a right angle.
All the angles below are right angles:
A right angle can be in any orientation or rotation as long as the internal angle is 90°
Types of Angles
Read more about Angles
See the angle types yourself: