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January 31, 2015

January 31, 2015

Posted by **Anonymous** on Friday, December 28, 2012 at 11:46am.

- maths --plse help me.. -
**Steve**, Friday, December 28, 2012 at 5:04pmIf we label the points ABCD as given, then

AB and CD have slope -3/2

AD and BC have slope 1/2

so, the sides are parallel

AC is vertical

BD has slope -1/2

so, tanθ = 2 ==> θ = 63.4°

The calculations are easier if you plot the points and draw the diagonals.

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