1 / 9

Question of the day

Question of the day. Name one two shapes that are always similar. dilations. Are the increase or decrease of a shape at a certain scale They are always similar Meaning same shape but different size. Two things we do. We create a dilation using scale factor

catrin
Télécharger la présentation

Question of the day

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Question of the day Name one two shapes that are always similar.

  2. dilations • Are the increase or decrease of a shape at a certain scale • They are always similar • Meaning same shape but different size

  3. Two things we do • We create a dilation using scale factor • Find scale factor by comparing two dialations

  4. Create dilation • First plot points given • Then multiply each coordinate by the scale factor given

  5. example • Scale factor 3 • A(1,2) B(2,4) C(3,4) • A’(1*3, 2*3) B(2*3, 4*3) C(3*3, 4*3) • Dilated shape is • A(3,6) B(6,12) C(9,12)

  6. How to find scale factor • divide two shape’s coordinates • D(1,2) E(2,3) F(4,5) • D’(3,6) E’(6,9) F’(12,15) • Divide each corresponding coordinate and get 3 • Scale factor is 3

  7. foldable • On front cover write foldable • Inside bottom glue graph paper and plot these three points • A(1,3) B(2,4) C(3,2) • On top flap • Write the points

  8. Turn to next page • On bottom cover glue graph paper • Plot same three point, connect them • On top write three points • Then figure three new dilated points using scale factor 2 • Plot those new points and connect them

  9. On last flap • Bottom flap glue graph paper • Plot these six points • D(-1,2) E(0,0) F(2,1) • D’(-2,4) E’(0,0) F’(4,2) • On top flap divide corresponding coordinates to find the scale factor

More Related