Cousin # = # of generations back to your shared direct ancestor - 1.
So if you share a grandparent (2 generations away), you’re 1st cousins.
removed is how many generations away you are from each other.
So if your parent is first cousins with someone, you’re first cousins once removed. You’re second cousins to their kids. You’re second cousins once removed to their children.
Your dad and his cousin share a set of grandparents. You and your dad’s cousin’s kid share a set of great-grandparents. That’s 3 generations up for both of you. So, 2nd cousins. No removed.
It’s not hard.
Cousin # = # of generations back to your shared direct ancestor - 1.
So if you share a grandparent (2 generations away), you’re 1st cousins.
removed is how many generations away you are from each other.
So if your parent is first cousins with someone, you’re first cousins once removed. You’re second cousins to their kids. You’re second cousins once removed to their children.
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You mean, literally the example at the end of their (very thorough) explanation?
Your dad and his cousin share a set of grandparents. You and your dad’s cousin’s kid share a set of great-grandparents. That’s 3 generations up for both of you. So, 2nd cousins. No removed.