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 Posted: Sat Dec 20, 2014 2:40 pm

Joined: Thu Oct 18, 2012 9:41 am
Posts: 444
Coordinates are

(2,2)
(8,4)
(3,-1)

work out 4th coordinate

(9,1)

What is the midpoint of this rectangle - give co-ordinates

thank you

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 Posted: Sat Dec 20, 2014 3:05 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 14010
Sketch it ...

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 Posted: Sun Dec 21, 2014 10:37 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3826
Find the middle of each side. Reiterate G55 - always draw.

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 Posted: Mon Dec 22, 2014 12:14 pm

Joined: Sat Aug 10, 2013 11:46 am
Posts: 216
If you have a diagonal going from (2,2) to (9,1) could you not just find the midpoint of that?

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 Posted: Tue Dec 23, 2014 4:25 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3826
Yes, but a solid concrete understanding helps most children. The diagonal is a more abstract stage of teaching.

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 Posted: Tue Dec 23, 2014 6:15 pm

Joined: Sat Aug 10, 2013 11:46 am
Posts: 216
Yes, I see. That makes sense.

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