Answer:
B.
1. line A and line B
2. line C and line D
3. line C and line A
4 line A and line D
5. line B and line C
Remember
1. perpendicular lines- two lines that are intersect and form 90° angle.
2. intersecting lines- two lines intersect with each other.
3. parallel lines- two lines that never meet.
4. right angle- an angle that measures exactly 90°
5. acute angle- an angle measures less than 90°
6. obtuse angle- an angle measures more than 90°
