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1 Unit 1: Pure Mathematics A

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Question 19

The points AAA, BBB, C C\,C and D D\,D have position vectors a=i+2j\mathbf{a} = \mathbf{i} + 2\mathbf{j}a=i+2j, b=7i+5j\mathbf{b} = 7\mathbf{i} + 5\mathbf{j}b=7i+5j, c=9i+j\mathbf{c} = 9\mathbf{i} + \mathbf{j}c=9i+j and d=3i−2j\mathbf{d} = 3\mathbf{i} - 2\mathbf{j}d=3i−2j.

a.

Show that ABCD ABCD\,ABCD is a parallelogram.

[4]
b.

Find the exact perimeter of ABCDABCDABCD.

[3]
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1 Unit 1: Pure Mathematics A Questions

  1. A Level
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