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But when we get to the Arctic Circle, the angle is going to be smaller.

And what we can see is that at the equator, the sunlight is direct to the equator. Sunlight (pencil lines) hits the equator at right angles, but the Arctic and Antarctic Circles at grazing angles. A side view of the earth showing a line at the middle for the equator, lines at 23.5 N and S for the Tropics of Cancer and Capricorn, and the Arctic and Antarctic Circles at 66.5 degrees North and South, respectively. The line near the North Pole is the Arctic Circle (66.5 degrees N), and the line near the South Pole is the Antarctic circle (66.5 degrees S). They are the Tropic of Cancer (23.5 degrees north of the equator) and the Tropic of Capricorn (23.5 degrees south of the equator). And then we draw two lines, on both sides of the equator. Let’s draw the first line on the earth (0 degrees latitude). Understand why the air at the Tropic of Cancer is dry. Know where the equator, Tropic of Cancer, and Tropic of Capricorn are.