Vegetables play and important part in a healthy diet.
The Putnams' lone surviving child out of eight. Like Betty Parris, Ruth falls into a strange stupor after Reverend Parris catches her and the other girls dancing in the woods at night.
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.
A passive voice is whenever you make the object of an action the subject of the sentence you are writing. (Ex: Why was the road crossed by the chicken?)
An active voice is whenever you make the subject of the sentence doing the verb's action. (Ex: The chicken crossed the road.)