Question

is the base, base angle and the difference of two sides is given how do I know that the triangle is to be constructed above or below​

Answer 1

Suppose there is a triangle ABC

IF in the first case the difference is given

AB-AC

Then the triangle is constructed above

Because in this case AB>AC

AND IN THE SECOND CASE IF

AC-AB IS GIVEN THEN THE TRIANGLE WILL BE CONTRUCTED