 To find the mirror image of an object, for example the tip of this arrow We need to draw at least two rays. So we can draw two random rays that go to the middle so I can draw this one here and So this one here For each of those rays we need to find that reflected way So what we need to do is we need to find the incoming and the outgoing angle So here I have an incoming angle with the surface of about 51 degrees So my outgoing angle should also be around 51 degrees of rays And I repeat in the same time for my ray on the top 65 fish degrees fish degrees is here But to find the object or the image of the object all I need to do is to back trace Those two rays and see what you can do Now for some way that is looking from the left side of the mirror it appears as these two rays will become from One location, which is the location of the tip of our arrow So I need to repeat the procedure for the bottom So I'm going to take another color here But it's the same thing So one of the easiest rays that they could draw is the one that's perpendicular Which is to flag right off. So if I backtrack It will appear that this light came somewhere from there Another one need to measure my angle 36 I found where the bottom of my arrow is so I know my whole image Must be around here Note that I have measured the angles from the surface of the mirror But I might square it as well as measure them from the normal to the mirror According to the law of reflection If I draw normal my incoming angle Is always equal to the Reflected angle