If quadrilateral abcd rotates 90° counterclockwise about the origin, what are the coordinates of a′ in quadrilateral a′b′c′d′ ? a.) (2, 1) b.) (-2, -1) c.) (-2, -2) d.) (-2, 0)

Your answer is gonna be B.

sum= when you add is how much the whole amount is

distance= when you use angles and it means how far it goes

step-by-step explanation:

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .