Question

State whether the following axioms are True or False:

If a ray stands on a line, then the sum of two adjacent angles so formed is equal to ${180}^{\circ }$180o.

• A. True
• B. False

Answer 1

The correct option is A True

If a ray stands on a line, then the sum of two adjacent angles so formed is 180.Conversely if the sum of two adjacent angles is 180, then a ray stands on a line (i.e., the non-common arms form a line).

Hence the above statement is True