if an angle has 40DEGREES and 80 dgrees what is the missing number?

Umm I think Its 60, if I know what you mean, if its a triangle. ( learned that if you press alt and 0176, it will give you the degree sign.

A triangle is 180°.
You take 40+80, and get 120.
So then you take 180-120, and get 60°.

If your figure is triangle sum of angles must be 180°

40°+80°+x=180°

120°+x=180°

x=180°-120°

x=60°

To find the missing number in the series of angles, we need to determine the relationship between the given angle measures.

Let's start by examining the two given angles: 40 degrees and 80 degrees.

An important property of angles is that the angles in a triangle sum up to 180 degrees. Therefore, if we have the measure of two angles in a triangle, we can find the measure of the third angle by subtracting the sum of the known angles from 180 degrees.

In this case, let's say the missing angle measure is represented by "x" degrees.

The sum of the given angles (40 degrees + 80 degrees) is 120 degrees.

So, to find the missing angle, we subtract the sum of the known angles from 180 degrees:

180 degrees - 120 degrees = 60 degrees.

Therefore, the missing number, or the measure of the missing angle, is 60 degrees.