how to label a trinagle

There are two rules around how to label a triangle and the main ones are uppercase and lowercase letters 

The first rule is that when labelling a triangle all of the angles on the inside of the triangle must be a capital letter. 

• All of the letters that stand for the length of the sides of triangles must be labelled with a lowercase letter.
• You can not have the same letter next to each other. usually, the letters will be opposite on the opposite side of each other  

You have to use these rules because when you are doing an equation with two lowercase letters, it can get confusing because you don't know what you are talking about.