Triangle ABC

Set 1.4
David Cohen
Question 34

Believe it or not, I understand part (c) and the area formula provided. Can you set up parts (a) & (b)?
I want to show the math work for 34.

 

a)
calculate tthe area of triangle ABC

A(3,4)
B(8,5)
C(7,8)

tthe area of triangle ABC:

area=(1/2)AB*BC where AB is distance between points A and B, and BC is distance between points B and C

find AB and BC

b)
(1,3)
(4,1)
(10,4)

do same sketch as in a), and apply same procedure to find area

 

I will show my work here when time allows, most likely on Friday, Sat or Sun.