exam Maths Puzzle Numerical Ability

Prove that the triangle with vertices (13,-1),(-9,3),and(--3,-9)is a right triangle.

Read Solution (Total 0)

exam Other Question

I need help on this problem.
Page 230
Number 8

Find the area of a triangle whose altitude is 7 feet and whose base is 22 feet.
I= E/R+r for rfor r.