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Translations of Polygons

Author:
John Donnelly, Steve Phelps
Topic:
Polygons, Translation

Direct Isometries

Translations and rotations are direct isometries. If you read the names of the vertices in cyclic order (A-B-C and A'-B'-C'), both would be read in the counterclockwise (or clockwise) direction.

Translating a Triangle

Question 1

Click point B on the triangle above. Drag it 3 points to the RIGHT and 1 point UP. (x, y) --> (x + 3, y + 1). Write the coordinates for A', B', and C' below:

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

Question 2

Click point B' on the triangle above. Drag it to the point (2, -1). Which translation below accurately describes the translation between Triangle ABC and Triangle A'B'C'?

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

Question 3

Drag B' above so that it is once again at point (0, 0). Now perform the following transformation: (x, y) --> (x - 1, y + 3) Write the coordinates for A'B'C' below:

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

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