Question

How many degrees are in a right angle?

Answer 1

Hint: In the given question, we have been given a colloquial (or commonly used) term for the representation or the depiction of a particular measurement of an angle. This question can be easily solved if we know where the right angle is used (it is used in an infinite number of places, just one will work) and when drawn on something, what does it look like. A normal angle is drawn in kind of a part of a circle. This particular angle has a different pictorial representation than any angle.

Complete step-by-step answer:

Whenever we see this representation, with two perpendicular lines and a square box between them, it means that it is at a right angle.
The measure of a right angle is \[90^\circ \].
Hence, the number of degrees in a right angle is \[90\].

Additional Information:
A right angle is used in many places. There are four right angles in a rectangle \[\left( {360^\circ } \right)\] and in a square too. While, there are two right angles in a triangle \[\left( {90^\circ } \right)\]. Perhaps, if there is a polygon with \[n\] sides, then the sum of angles in it is \[\left( {n - 2} \right) \times 2 \times 90^\circ \]. Also, when there is a perpendicular on a line, then the angle the perpendicular makes with the line is also a right angle.

Note: So, for solving questions of such type, we first write what has been given to us. Then we write down what we have to find. In this question, we were asked how many degrees are there in a right angle. We can easily solve this if we know the representation of a right angle – a box, a square like figure in between two perpendicular lines.