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Question 554587: Find the values of X and Y in parallelogram ABCD.
AB - 2y, BC = y + 1, CD = 5x - 1, DA - 2x + 4

I'm totally stuck.
Click here to see answer by jim_thompson5910(28536)

Question 555191: My question is:
Graph the point A(3,2), B(1,-2), C(2, -5), D(4,-1) on the coordinate plane. What kind of quadrilateral is ABCD? Use math to justify your answer.
I did the graph and it looks like a parrallelagram, but I do not know how to justify this if it is correct.
Click here to see answer by Alan3354(30993)

Question 555967: The questions asks:
What is the most precise classification of this quadrilateral which has opposite sides with equal slopes and consecutive sides with slopes that are negative reciprocals?
I have tried to graph things that would work and thought of the descriptions of the geometric shapes, but I just can't seem to find one that fits this description.
Click here to see answer by KMST(1868)

Question 556153: Qhen finding the measure of the interior angle and finding X how do you find
J,K,L,M If J=(3x-6) K=(x+10) L=2x and M=(2x-8)?
i used the equation-n-2(180) add up all my x's and numbers and got 8x-4=360
+4 +4 and got 8x=364 then divided that by 8 to get X=44.5
Click here to see answer by KMST(1868)

Question 556782: ABCD is a quadrilateral with AB = 8, BC = 13 and DC = 15. What is the maximum possible integral value of AD?
Click here to see answer by mathstutor494(95)

Question 557093: in a parallelogram one side is 13 meter and another is 11 meters and one of the diagonals is 16 meters.
find the other diagonal
Click here to see answer by Theo(3458)

Question 557284: Given ABCD is a parallelogram, angle A= (x+6)degrees, and angle B= (2x+15)degrees,then find the measure of angle D.
A) 21
B) 127
C) 53
D) 121
Click here to see answer by heilok(4)

Question 558828: in the given figure, ABCD is a parallelogram with perimeter 4o cm,AD=2x, CD=2y+2, AB=3x. Find the value of x and y.

Click here to see answer by rapaljer(4667)

Question 559506: If you are just given vertices how do you find out if the shape is a rhombus, a rectangle, or a square?
Click here to see answer by KMST(1868)

Question 562586: I need help with quadrilaterals!
Click here to see answer by solver91311(16872)

Question 563124: what is the perimeter of a parallelogram that is 30 cm by 20cm?

Click here to see answer by richard1234(5390)

Question 563081: Can u tell me the formulae for finding area of parallelogram with 4 coordinates?
Click here to see answer by richard1234(5390)

Question 565384: The measure of one angle of a parallelogram is 39. Which of theses
is the measure of another angel in the
Parallelogram
A. 51
B. 141
C. 107
D. 282
Click here to see answer by stanbon(57282)

Question 565616: if a figure is a parallelogram it cannot be a __________________

Click here to see answer by stanbon(57282)

Question 565639: how is finding the area of a parallelogram similar to finding the are of a rectangle ?
Click here to see answer by stanbon(57282)

Question 565817: my homework is asking me: For what values of x and y must each figure be a parallelogram?
1. it is a rhombus with 4y , x , 2y, and (5x-180) in each corner. (angle measures)
i tried to create a problem by doing 6y+6x-180=180 but it didn't work out and i don't know any other way to do it. can you please help thank you :)
Click here to see answer by mananth(12270)

Question 565849: How do you find the perimeter of a parallelogram (square, rectangle, or rhombus) when you are only given some numbers in the problem?
Click here to see answer by ad_alta(240)

Question 566083: what is 5y-7
Click here to see answer by Alan3354(30993)

Question 566134: In Rhombus ADBC, point A is (6,13) on the coordinate plane, and point B is (13,6) Find the slope-intercept equation of diagonal CD in the rhombus.
Click here to see answer by Edwin McCravy(8892)

Question 566546: Quadrilateral abcd has vertices a(-5,6) b(6,6)c(8,3) and d(-3-3).
Prove quadrilateral abcd is a parallelogram but is neither a rhombus nor a rectangle.
Click here to see answer by solver91311(16872)

Question 567134: How do you find the measurement or value of a parallelogram? i thought the opposite sides were suppost to be the same measurement but i guess not.
Click here to see answer by Edwin McCravy(8892)

Question 568020: The sum of the angle measures of a polygon with n sides is 1080. Find n.
Click here to see answer by stanbon(57282)

Question 568071: is a quadrilateral with sides 5, 8, 5, 8 in that order always a rectangle?
Click here to see answer by richard1234(5390)

Question 568657: The measure of angle A is 30 degrees less than twice the measures of angle B. Find the measures of each angle of the parallelogram
Click here to see answer by stanbon(57282)

Question 570599: If the area of a rhombus is 252 and the perimeter is 84, what is the altitude?
I have tried to use the area equation on A=1/2xy. I can not get it to work out. Please help.
Click here to see answer by Edwin McCravy(8892)

Question 571359: Hello there! This is a question I had on a test review worksheet, that i didn't quite understand.
"Quadrilateral ABCD is a parallelogram. If adjacent angles are congruent, which statement must be true?"
A: Quadrilateral ABCD is a square
B: Quadrilateral ABCD is a rhombus
C: Quadrilateral ABCD is a rectangle
D: Quadrilateral ABCD is an isosceles trapezoid
I have eliminated "B" and "D", but I am unsure as to whether ABCD is square or rectangle. Could you kindly explain as to why it is either one?
Click here to see answer by Alan3354(30993)

Question 571674: 2+2
Click here to see answer by Alan3354(30993)

Question 572860: how do you figure out the cordinates of quadrilaterals?
Click here to see answer by solver91311(16872)

Question 574564: What would be the square footage of a property with four unequal lenght sides?
one 41.67
two 98.42
three 40.42
four 81.69
Click here to see answer by Alan3354(30993)

Question 574711: given the slopes of a quadrilateral are 3 -3 3 -3 what is the best classification of the quadrilateral

Click here to see answer by solver91311(16872)

Question 574665: Determine for each of the following which of the figures (if any) labeled (1) through (10) can be classified under the given terms.

b. Isosceles but not equilateral triangle –
c. Equilateral but not isosceles triangle –
d. Parallelogram but not a trapezoid –
e. A trapezoid but not a parallelogram –
f. A rectangle but not a square –
g. A square but not a rectangle –
h. A square but not a trapezoid -

Click here to see answer by solver91311(16872)

Question 575476: How can you find out the measure of an angle in a parallelogram if I only know the side lengths
Click here to see answer by solver91311(16872)

Question 575889: How do you prove a parallelogram with two consecutive sides congruent to be a rhombus?
Click here to see answer by solver91311(16872)

Question 575941: How can you find the height of the parallelogram if you have the base and area?

Click here to see answer by richard1234(5390)

Question 576612: What is the height of a parallelogram in which the area equals 96 centimeters squared and the base equals 8x centimeters. I started with, 96=8x(h) to get the height and got 96=8xh but I don't know if that is right. But I tried to go further and got 12=xh. I don't know what to do after that...
Click here to see answer by solver91311(16872)

Question 577047: how do you know if a quadrilateral is a parallelogram?

Click here to see answer by jim_thompson5910(28536)

Question 577898: k+10=5j-9
Click here to see answer by jim_thompson5910(28536)

Question 577921: m+8=2n-1
Click here to see answer by jim_thompson5910(28536)

Question 578125: Given: Quadrilateral ABCD is a parallelogram.
Angle C is a right angle.
Conclusion: Quadrilateral ABCD is a rectangle.
How will i prove this?
Click here to see answer by ad_alta(240)

Question 578904: find the midpoint of each of the two diagonals of parallelogram with vertices A(1,1) B(6,1) c (7,3) d(2,3)
Click here to see answer by Gogonati(809)

Question 579147: The measure of one interior angle of a parallelogram is 0.25 times the measure of another angle. Find the measure of each angle.
Click here to see answer by edjones(7569)

Question 582117: how do I find the value of h in a parallelogram?
Click here to see answer by stanbon(57282)

Question 582688: quadrilateral ABCD is a parallelogram. If adjacent angles are congruent, which statement must be true. I know that the answer is Quadrilateral ABCD is a rectangle but I need to know why it is a rectangle and not a square. Thank you in advanced for your help I really need it.
Click here to see answer by mananth(12270)

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