Answer:
He/she/it is climbing.
Explanation:
Third person is describing a character using "he", "she" or "it". There is no "I" or "me" or "my". It is present; happening at the very moment. So "I am climbing the mountain (right now)." Progressive-moving along; going to finish up-in the process of doing.
Did you try looking it up on the internet?
This is math, not English, but okay xD
"Two intersecting lines are perpendicular if and only if they form four 90 degree angles" would be my answer.
Answer:
Lincoln and Douglass both wanted to abolish slavery- they developed a friendship based around getting this done. After Lincoln passed, Douglass was even more so motivated to continue the work.