Find the approximate area of a triangle that has vertices at a(-4,-2) b(1,1) and c(5, -1). 14 square units 18 square units 20 square units 22 square units

using the formula 1/2(b*h) you should get 13.5 so approximately 14

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)