Mathematics
A(1, 1), B(5, 1), C(4, 2) and D(2, 2) are vertices of a quadrilateral. Name the quadrilateral ABCD. A, B, C, and D are reflected in the origin on to A', B', C' and D' respectively. Locate A', B', C' and D' on the graph sheet and write their co-ordinates. Are D, A, A' and D' collinear ?
Reflection
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Answer
The graph is shown below:
From graph,
ABCD is an isosceles trapezium.
A' = (-1, -1), B' = (-5, -1), C' = (-4, -2) and D' = (-2, -2).
Since, D, A', A and D lie on same line so D, A, A' and D' are collinear.
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