1. Yes
2. Yes
3. No
4. Yes
To see if the shapes are similar, you can check a ratio, for ex.
At number 1, the sides is
4 : 12
2 : 6
If you simplify these ratio's so that the left side is 1, you divide by those numbers on both sides:
4÷4 : 12÷4
2÷2 : 6÷2
Simplifying that leaves these results:
1 : 3
1 : 3
If these ratio's are the same, it means the shapes are similar. You can repeat the process with all the other figures to see if they are similar or not.
