How do I find out the coordinates of the fourth point of a parallelogram knowing the first three?

Say the parallelogram is called ABCD, you know the coordinates of A, B and C and want to find out DFirst of all, you'll want to calculate a vector from one of the sides of the parallelogram, say AB. Because this is a parallelogram, opposite vectors are equal, meaning AB = CD. This means that you know the x- and y- components of CD, but you also know that xCD= xD- xC and yCD= yD- yC. By rearranging, you can find xD and yD, the coordinates of D.

MG
Answered by Melzie G. Maths tutor

3610 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve, using the quadratic formula, the equation x^2 +2x=35


Solve the simultaneous equations '2X+Y=7' and '3X-Y=8'


What is meant by the term specific heat capacity?


How do I solve a simultaneous equation like this: 2x-5y=3, 3x+2y=14 ?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences