AI Tutor
Imagine opening a pair of scissors just a tiny bit to snip a string, or opening them wide to cut cardboard.
That space between the blades is an angle, which is simply the opening formed when two straight paths meet at a single corner.
In math, we call the corner point a vertex and the two straight arrows pointing outward rays.
How do we measure how wide an angle opens up? We need a special counting unit.

Measuring in Degrees

We measure an angle's turn in degrees, written with a small symbol like this: ∘^\circ.
If you stand in place and spin around until you face front again, you make a full turn of 360∘360^\circ.
Long ago, ancient Babylonian sky-watchers picked 360360 because the Sun takes about 360360 days to complete its yearly cycle in the sky, and 360360 is easy to split into equal pieces.
What if one drawing has giant, long rays and another has tiny, short rays? Does that change the angle?

The Length Trap

A common mistake is thinking an angle with longer lines must be bigger. But ray length never changes an angle!