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1.2 Co-ordinate geometry in the x, y plane

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Question 28

Points A(−1,5)A(-1, 5)A(−1,5), B(1,1)B(1, 1)B(1,1), C(5,8)C(5, 8)C(5,8) and D(7,4)D(7, 4)D(7,4) are the vertices of a quadrilateral ABCDABCDABCD.

a.

Prove that ABCD ABCD\,ABCD is a rectangle.

[4]
b.

Find the area of ABCDABCDABCD.

[3]

1.2 Co-ordinate geometry in the x, y plane Questions

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  3. /1.2 Co-ordinate geometry in the x, y plane