PLEASE HELP ME ANSWER ALL QUESTIONS IN FULL DETAIL; NEEDS TO BE DONE FOR TOMORROW AND IM SO STRESSED OUT. WILL AWARD BRAINLIEST AND 30 POINTS

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Can someone tell me if this is perpendicular? !