In figure, `angleB lt angleA` and `angleC lt angleD`. Show that `AD lt BC`.

Explanation

To solve the problem, we need to show that if \( \angle B < \angle A \) and \( \angle C < \angle D \), then \( AD < BC \). Here’s a step-by-step solution:

### Step 1: Understand the Angles and Sides
Given:
- \( \angle B < \angle A \)
- \( \angle C < \angle D \)

From the properties of triangles, we know that the side opposite a larger angle is longer than the side opposite a smaller angle.
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