Area of Triangle with 3 vertices (coordinates) [Leaving Cert]

@mathstulla. This tutorial video explains how to find the area of the triangle whose 3 vertices are given. Finding the area of the triangle when given the 3 coordinates/points (corners) of the triangle. Coordinate Geometry Leaving Cert Maths

[@claudiacudjoe3170]

Well explained !

[@tullamaths]

Thanks for the nice feedback !

[@amaniamzand9789]

You are a life saver man. You are a true hero

[@tullamaths]

I'm glad it was helpful

[@CianPrior]

Thanks very much, doing my junior cert in a few weeks and didn't understand that a bit until this video. Keep it up, thanks.👍

[@Mizcocoi_]

thanks

[@tullamaths]

Glad it helped !

[@chingumball9651]

why do you map (2,5) 0,0 and would the answer be different if you mapped a different cordinate?

[@tullamaths]

Hi, it doesn't matter which of the 3 points you map to (0,0), it will be the same answer each time. Its up to you which point you pick

[@filipsichrovsky]

What is the proof or explanation that the area is |x1y2-x2y1|/2 ?

[@shaileshnaulakha]

Very bed