The Rigid Transformations: Shapes on a Plane Part 1 math study materials are available at the link above. This packet includes an introduction to the coordinate plane which is covered on the GED. There are also geometry topics on the GED which were not on the TASC, That though students will not see these topics on the GED, they are found on the Translations, and reflections), angles, and geometric definitions. These include geometry topics like rigid transformations (rotations, PLEASE NOTE: There are several geometry topics that were assessed on the TASC that are not We created a step by step guide for folks who are not sure how to break a PDF file into smaller chunks: Breaking Up is (not) Hard to Do. So I like choice B.If you are teaching remote online classes during Covid-19 and using the packets with your students, we recommend breaking the packets up into assignments. To map them onto each other even if you can use dilations. And then, if you tried to dilate it, so that the length of HIĪnd GJ matched KN or LM, then you're gonna make HG bigger as well. Look something like this, IJ would go right over here. You could try, you could map HG onto KL, but then segment IJ would It's impossible to map quadrilateral GHIJ onto quadrilateral LKNM using only rigid transformations and dilations so the figures are not similar. And so, choice A does not make any sense. Something that's congruent and not similar. Oh, choice A is making anĮven stronger statement because anything that isĬongruent is going to be similar. HG can be mapped onto KL so the quadrilaterals areĬongruent, not similar. Transformation, a translation would map HG onto KL? Yep, we just talked about that. I'm already, I'll already rule out C, that it's a correct conclusion 'cause I don't think they are similar. So it is strange that ShuiĬoncluded that they are similar. So it doesn't seem like you could do this. The same as the length of HI well then the lengths of KLĪnd GH would be different. So, and then if you try to dilate it down so that the length of KN is But these sides KN and LM right over here, they seem a good bit longer. And if you did that, it looks like L would get mapped onto G. You could say okay, let me shift it so that K gets mapped onto H. Now, when I look at these two figures, you could try to do something. All right, so let's just remind ourselves one definition of similarity that we often use on geometry class, and that's two figures are similar is if you can through a series of rigid transformations and dilations, if you can map one figure onto the other. Make in her conclusion? Pause this video and try toįigure this out on your own. And so, based on that she concludes that the figures are similar. Told that Shui concluded the quadrilaterals, these two over here, have four pairs of congruentĬorresponding angles. If you say 0.5, the shape will be 0.5 times as big. If you say 2, the shape will be 2 times as big. The third number you put in is how much to dilate by. Dilation: The coordinates are the coordinates of where you would have put the center of the original circle dilation tool. The shape you have will flip over that line. It is extremely hard to use! Imagine a line segment coming from the first set of coordinates you give, ending at the second set. Reflection: Reflection baffled even me at first glance. 180 will effectively flip it over and 90 will bring it round by a quarter, or half of a half. There are 360 degrees in a circle, so entering in 360 will bring it all the way round. Then put in how many degrees you want to rotate your shape by. Best to enter in the coordinates of one of the points of your shape, preferably the one that overlaps a point of the other shape. Rotation: Rather than dragging the arrow around, it wants you to put in where you're rotating it about. So putting in (-5, 6) would move it 5 to the left and 6 up. Translation: Instead of dragging a shape around, it requires you to enter in how much you want to move it by. However, I'm sure it shouldn't be too different.ġ minute later after Ayaka has rewatched the video and looked at the exercise This video is fairly old, the exercise has probably been updated since the video was recorded.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |