∠1 is decomposed into two nonoverlapping angles, ∠2 and ∠3.

let m∠1 = 165° and m∠2 = 75°. what type of angle is ∠3?

Which formula gives the area of a triangle? a=1/2(b+h)

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a. about 4 b. about 8 c. about 40 d. about 21