Please help me with my Geometry questions

Question

identify each of the following:

 

2. The Ray common to two adjacent congruent angles

 

3. Lines that intersect to form right angles

 

4. A triangle with perpendicular legs

Answer 1

2) the angle bisector (the bisector of the large angle made up of the two congruent angles)

 

3) perpendicular lines

 

4) a right triangle