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PowerPoint D2 L8 Read and plot coordinates in the first quadrant; recognise parallel and perpendicular lines in grids.

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 A (3,4) B (4,3) C (6,2) D (2,6) E (8,6) F (1,7) G (5,9) Find the following:

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A (3,4) B (4,3) C (6,2) D (2,6) E (8,6) F (1,7) G (5,9) 12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Find the following: A B C D F E G

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9

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12345678 0 y 1 3 2 6 4 5 9 x 7 8 9 Q P R T Points Q (1,5) and P (5,1) are joined by a straight line (Line A). Points R (1,8) and T (7,2) are joined by a straight line (Line B).

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Q P R T Can you find two points that produce a line which is also parallel to these two lines?

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 R T Can you find two points that produce a line which is perpendicular to this line?

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Plenary/Review

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Line A = (2,3) (7,8)Line C = (3,6) (1,10) Line B = (4,4) (7,1)Line D = (9,0) (7,6)

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Line A = (2,3) (7,8)

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Line B = (4,4) (7,1)

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Line C = (3,6) (1,10)

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12345678 0 y 1 3 2 6 4 5 10 9 x 7 8 9 Line D = (9,0) (7,6)

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Cartesian Coordinate System Mathematics often display relations by using a grid system called the Cartesian Coordinate System.

Cartesian Coordinate System Mathematics often display relations by using a grid system called the Cartesian Coordinate System.

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