When we explore angles in geometry and trigonometry, we're really just trying to figure out how to measure the space between two lines that meet at a point. We use two main units to do this: degrees and radians.

1. Degrees: This is the classic way to measure angles. A full circle is divided into 360 degrees. So, when someone talks about “a right angle,” they mean an angle that’s 90 degrees. This way of measuring feels natural since we're used to using base 10.

2. Radians: Radians can be a bit more complicated! Instead of breaking a circle into 360 parts, we use the radius of the circle to measure angles. A full circle is 2π radians, which is about 6.28 radians. This method might seem a little tricky at first, but it actually makes many math formulas easier, especially when dealing with circles and trigonometric functions.

Knowing how to convert between degrees and radians is a useful skill. You can use these formulas:

• To change degrees to radians, multiply by (\frac{\pi}{180})
• To change radians to degrees, multiply by (\frac{180}{\pi})

Understanding these two units of measurement gives you a strong base as you dive deeper into the world of trigonometry!