What are the two rules for shapes to be similar?
All corresponding sides must be in the same proportion.
The rotation of the two shapes must be the same.
The shapes must not be touching.
All corresponding angles must be equal.
The sides of the two shapes must be parallel.
For triangles to be similar, do you have to prove both conditions?
Yes
No
If two triangles have all of their angles the same, are they similar?
What is the first step to working out a missing side to one of the triangles?
Prove the triangles' similarity
Find the ratio of the corresponding sides
What is the second step?
If two triangles look the same on a paper, does that mean they are similar?