" The set of right triangles."

A (v) 2cA (viii) {?, {?}, {1, ?}|c A (iv) 12, c (vii) ((21, (1)1 z A 9. Write down all possible subsets of each of the follov (G) la) (v) { 10. Write down all possible proper subsets each of the 11. What is the total number of proper subsets of a set 12. If A isany set, prove that. A ? A-?. 13. Prove that. A B, B and C A A-C. 14. How many elements 15. What universal set (s) would you propose for each has P (A), if A-?? (i) The (i) The set of right triangles. 16. IEX = {8"-7n-1:neN} and Y = {49 (n-1):neN)

In a right triangle

The set of right-angled triangles in a plane is :

The triangle formed by joining the midpoints of the sides of a right triangle is ............... .

Which of the following are not the sides of a right triangle?

Which of the following are the sides of a right triangle?

In the set of all triangles "similarity is