Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
steanson
Group Title
The diagonals of a plane quadrilateral ABCD intersect at O, and X,Y are the mid points of the diagonals AC and BD respectively. Show that:
(vectors)
(i) 2AB + 2BC + 2CA = O
and (ii) If OA + OB + OC + OD = 4OM, find the location of M
 2 years ago
 2 years ago
steanson Group Title
The diagonals of a plane quadrilateral ABCD intersect at O, and X,Y are the mid points of the diagonals AC and BD respectively. Show that: (vectors) (i) 2AB + 2BC + 2CA = O and (ii) If OA + OB + OC + OD = 4OM, find the location of M
 2 years ago
 2 years ago

This Question is Closed

steanson Group TitleBest ResponseYou've already chosen the best response.0
Now (i) doesn't look right to me as O is not a vector? Any one shed any light on this
 2 years ago

shaan_iitk Group TitleBest ResponseYou've already chosen the best response.1
1) I think it is not O but 0 (zero) ABC form a triangle hence AC = AB + BC (vector addition). Hence AB +BC+CA = 0
 2 years ago

steanson Group TitleBest ResponseYou've already chosen the best response.0
yes i think you're right, its def a typo in the book
 2 years ago

steanson Group TitleBest ResponseYou've already chosen the best response.0
the last part turns out to be mid XY not sure how to prove that? I'll post the question again...
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.