https://padlet.com/thach_thao_phan/mpm2d_week7 Share, Get Exposed, Consume and Grow from Each Others' Experiences! en-us 2017-03-20 19:53:10 UTC 2023-03-16 05:42:30 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Lightdecrease.png thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161318011 Students came up with some great answers!]]> 2017-03-20 19:55:36 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161318011 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161318458 Here's what one group did to find where the lines meet.]]> 2017-03-20 19:57:14 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161318458 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161318986 Here's what another group did.]]> 2017-03-20 19:59:27 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161318986 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161696120 There's a bunch of ways to write a negative fraction, but the last one below ends up being positive]]> 2017-03-22 02:05:51 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161696120 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161696445 When the rise is negative it means you are going down or moving in the negative direction.
When the run is positive it means you are moving in the positive direction. But if the run is negative it means you are moving in the negative direction.]]> 2017-03-22 02:09:14 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161696445 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161699407 Lines that meet at a 90 degree angle have slopes that are negative reciprocal of each other. Meaning you flip their rise and run and if one of the slopes is positive, the other one has to be negative.]]> 2017-03-22 02:34:38 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/161699407 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162020455 with the line segment from(-2,-2) to (4,0) as one of the perpendicular sides.]]> 2017-03-23 04:49:56 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162020455 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162020790 Now find the perimeter, area and interior angles. ]]> 2017-03-23 04:55:54 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162020790 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162020870 Now make you right triangle into an isosceles triangle.]]> 2017-03-23 04:57:25 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162020870 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162263267 2017-03-23 20:01:13 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162263267 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162268815 2017-03-23 20:27:33 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162268815 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162269451 2017-03-23 20:30:45 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162269451 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162269768 2017-03-23 20:32:35 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162269768 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162504879 Good start! Found one altitude equation and started on the second. What's next?]]> 2017-03-24 18:47:32 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162504879 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162507915 Do you see the answer in the bottom right corner? (-2,2), the vertex at the 90 degree! So the Orthocentre of a right triangle is at the vertex of the 90 degree angle. Why is that?]]> 2017-03-24 18:57:20 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162507915 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162508585 The Orthocentre is where the 3 altitudes of a triangle intersect.
A triangle is created by connecting (2,8), (-2,2) and (7,-4). 
Find the coordinates of the Orthocentre.]]> 2017-03-24 19:00:49 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162508585 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162509215 This group's answer is in the top left corner.]]> 2017-03-24 19:04:21 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162509215 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162510438 I liked that this group found the x-value of the Orthocentre and realized that it was at the 90 degree vertex. "It's a right triangle so of course the perpendicular sides are the altitudes to each other!"]]> 2017-03-24 19:10:46 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162510438 thach_thao_phan https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162511663 This group found the equations of all three sides of the right triangle, and when they tried to find the equation of the altitude of one of the perpendicular sides, they realized it was the same as the equation of the other perpendicular side....and then they realized where the Orthocentre was.]]> 2017-03-24 19:17:58 UTC https://padlet.com/thach_thao_phan/mpm2d_week7/wish/162511663