Input question: The two other angles in a right-angled triangle must always add up to how many degrees? 60; 90; 120; or 180?

Output answer: 90

Input question: What is the name for a group of whales?

Output answer: pod

Input question: Which American nuclear submarine was the first to sail across the North Pole under the ice cap?

Output answer: nautilus

Input question: What is a line called that goes straight from the centre of a circle to the circumference?

Output answer:
radius