Classwork ~ DSGT8734
Warm Up
Triangles B and C have been built by dilating Triangle A.![](https://cdn.openupresources.org/uploads/pictures/8/8.2.A5.newPP.Image.01.png)
![](https://cdn.openupresources.org/uploads/pictures/8/8.2.A5.newPP.Image.01.png)
- Find the center of dilation.
- Triangle B is a dilation of A with approximately what scale factor?
- Triangle A is a dilation of B with approximately what scale factor?
- Triangle B is a dilation of C with approximately what scale factor?
- The center of dilation is here:
- 3
- 13
- 23
Dilate the figure below by 1/2 and the centre point as B.
Exit Ticket/Practice
Here is a triangle.
Triangle ABC is a right triangle, and the measure of angle A is 28∘. What are the measures of the other two angles?