ABCD is a square. One point on each of AB and CD; and two distinct points on each of BC and DA are chosen. How many distinct triangles can be drawn using any three points as vertices out of these six points?
A
16
B
18
C
20
D
24
Correct Answer: Option C
Explanation
1. **Analyze the Setup**: We have a square with points distributed on its sides: 1 on AB, 1 on CD, 2 on BC, and 2 on DA.
Total distinct points = 1 + 1 + 2 + 2 = 6 points.
2. **Apply Previous Learning (Translation)**: Just like the 2017 questio