Tuesday

July 22, 2014

July 22, 2014

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.

**Related Questions**

geometry - Given: QRST is a parallelogram. Prove: QRST is a square. Complete ...

maths --plse help me.. - ABCD ia a parallelogram whose diagonals intersecting at...

Algebra - Let A(4,3) B(5,8) and C(3,10) be three points in a coordinate plane. ...

maths --plse help me.. - In a parallelogram ABCD, diagonals AC & BD intersect at...

maths --plse help me.. - In a parallelogram ABCD, diagonals AC & BD intersect at...

maths - if the points A(-1,2) , B(2,3) , C(-3,2) and D(-4,-3) are the vertices ...

math - A parallelogram is a convex quadrilateral with four vertices and two sets...

math - points P(4,12), Q(9,14), and R(13,4)are the three vertices of a rectangle...

maths - ABCD ia a parallelogram whose diagonals intersecting at E. AC is ...

maths - how to construct a parallelogram in which diagonal ac=7.2cm,bd=5cm and ...