Estimate Angles

In order to estimate a given angle, keep in mind a 90° angle (right angle).

A 90° angle looks like a corner of a rectangular piece of paper or a corner of a square.

Let's look at an example.

Consider the angle given below.

Let's estimate the measure of this angle.

Observe that, the size of this angle is less than 90°.

So, the estimate for the measure of the given angle is 45°.