`/_1=60^@ and /_2=(2/3)^(r d)` of a right angle. Prove that `l |\| m`

Explanation

To prove that lines \( l \) and \( m \) are parallel given that angle \( \angle 1 = 60^\circ \) and angle \( \angle 2 = \frac{2}{3} \) of a right angle, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Angles**:
We are given:
- \( \angle 1 = 60^\circ \)
- \( \angle 2 = \frac{2}{3} \) of a right angle.
...