The Student Room Group

Triangles gcse Q

21250E99-7F81-481A-A8F7-CE4CBF147DAD.jpg.jpeg
Original post by ra1500
...


You need to show that the vector DE is a multiple of the vector BC.

EDIT: Or perhaps the expected approach is to show that the gradients are the same.
Original post by ra1500
21250E99-7F81-481A-A8F7-CE4CBF147DAD.jpg.jpeg

Can you copy what you wrote please? If this is mathswatch then it's a case of finding the right vocab.
Reply 3
2/4=0.5
BC gradient is 2
AB (3,2)
AC (1,1)
DE gradient is 1/2=0.5
same gradients
parallel line have the same gradients
DE=0.5
BC=0.5
Original post by Muttley79
Can you copy what you wrote please? If this is mathswatch then it's a case of finding the right vocab.
Original post by ra1500
2/4=0.5
BC gradient is 2
AB (3,2)
AC (1,1)
DE gradient is 1/2=0.5
same gradients
parallel line have the same gradients
DE=0.5
BC=0.5


I think you need to show more steps and BC gradient is not correct.
D has coordinate (3,2) and E has coordinate (1,1)
Gradient of DE = (2 - 1)/(3 - 1) = 0.5
Gradient of BC = (-2 - -4)/(3 - 1) = 0.5
BC and DE have the same gradient so they are parallel.

Quick Reply

Latest