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Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: i cant figure these out... if someone could PLEASE help thatd be great!?
Replies: 3   Last Post: Jul 31, 2008 10:57 AM

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ashley

Posts: 1
Registered: 12/10/04
i cant figure these out... if someone could PLEASE help thatd be great!?
Posted: Nov 26, 2003 2:34 PM
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1. If ON=4x-5, LM=2x+4, NM=x+5, and OL=8y-7, find the values of x and
y given that LMNO is a parallelogram.

a)x=-1/2;y= 23/16
b)x=2;y=-16/33
c)x=9/2;y=33/16
d)x=9/2;y=-16/33


2.Consider the statement, "if a parallelogram is a square,then it is a
rhombus."

a)decide whether it is true or false.
b)Write a converse
c)decide whether the converse is true or false.


3.draw figure in a coordinate plane and write a coordinate proof
Given: Quadrilateral ABCD with A (-5,0), B (3,-1) C(6,1), D(-2,2)
Prove: ABCD is a parallelogram

i drew the figure but i dont know how to do the rest of that one.. and
the other 2 i dont understand how to do.. if someone could please help
me with these thatd be great.. thanks.





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