Name each of the following triangles in two different ways: (you may judge the nature of the angle by observation)

Explanation

To name each of the given triangles in two different ways, we will analyze them based on their angles and sides. Here’s a step-by-step solution:

### Step 1: Identify the properties of the triangles
- **Angles**: Determine if the angles are acute (less than 90°), right (equal to 90°), or obtuse (greater than 90°).
- **Sides**: Determine if the sides are equal (equilateral), two sides are equal (isosceles), or all sides are different (scalene).

### Step 2: Analyze each triangle

...