3E3/3E4 by Joanne Lim https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg en-us 2021-07-15 02:27:38 UTC 2025-10-14 17:09:54 UTC hello@padlet.com https://padlet.net/icons/png/1f4a1.png https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658769191 ABCD is a parallelogram 
gradient of l1: y=x+5 is 1
gradient of l2: y=x-4 is 1
line Ab and CD are parallel 

gradient of l3: y=5x-2 is -2
gradient of l4: y=-2x-5 is -2
line Ad and Bc are parallel

therefore, since there are 2 sides parallel to each other, it is a parallelogram ]]> 2021-07-23 00:25:55 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658769191 Jay https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658773822 ABCD is a parallelogram
as gradient of L1: y=x+5 is 1
and gradient of L2: y=x-4 is 1, 
which means lines AB and CD are parallel.
But, gradient of L3: y=5x-2 is -2
and gradient of L4: y=-2x-5 is -2,
which means lines AD and BC are parallel.
Thus, ABCD is a parallelogram.]]> 2021-07-23 00:29:31 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658773822 if they have different gradients, how can they be parallel? lim_shanrui_joanne https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658777177 2021-07-23 00:32:03 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658777177 Adhithya https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658778306 ABCD is a parallelogram.

gradient of l1:y=x+5=1
gradient of l2:y=x-4=1
l1 and l2 are parallel. Hence ,AB and AC are parallel. 

gradient of l3 :y=5x-2=-2
gradient of l4: y=-2x-5=-2
l3 and l4 are parallel. Hence, AD and BC are parallel.

Since the quadrilateral ABCD has two pairs of parallel sides, it is a parallelogram.

]]> 2021-07-23 00:32:54 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658778306 Gabriel https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658789415 The parallelogram has 2 pairs of parallel lines and 2 pairs of lines BC is parallel to AD
Therefore ABCD is a parallelogram]]> 2021-07-23 00:41:38 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658789415 edmund https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658795752 there are 2 pairs for paralell lines therefore ABCD is a parallelogram ]]> 2021-07-23 00:46:22 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658795752 Jeevesh https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658821220 There are 2 pairs of parallel lines so abcd is a parallelogram]]> 2021-07-23 01:04:46 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658821220 cayden https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658845223 in a parallelogram, there are 2 pairs of parallel lines and ABCD has 2 pairs of parallel lines AB and CD, AD and BC.

]]> 2021-07-23 01:19:22 UTC https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658845223 lucius https://padlet.com/lim_shanrui_joanne/b7wigpiwzwp2c0kg/wish/1658895473  there are two pairs of parallel lines in ABCD, AB and CD, so ABCD is  a parallelogram



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