What universal set(s) would you propose for each of the following ?
(i) The set of right triangles
(ii) The set of isosceles triangles.

Explanation

To determine the universal set for the given sets of triangles, we will analyze each case step by step.

### Step 1: Identify the Set of Right Triangles
The set of right triangles includes all triangles that have one angle measuring 90 degrees.

### Step 2: Define the Universal Set for Right Triangles
The universal set for the set of right triangles should encompass all types of triangles, as right triangles are a subset of triangles. Therefore, the universal set can be defined as the set of all triangles.

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