What is a Radian?

In this applet, you will explore a radian.

1. Use the slider to change the angle. How many radians are there in a full circle? 2. Does changing the radius (r) affect how many radians there are in a circle?

New Resources

Regular Polygons and Equivalent Triangles
רישום חופשי
The Gardener's Ellipse
bewijs stelling van Pythagoras
Slope Between 2 Points (Phase 2)

Discover Resources

Angle in a Semi-Circle
biparticion2
paralelogram 2
三角形分類_1
parametric curve with velocity vector
Comparing Apples and Oranges with Ratios

Discover Topics

Derivative
Congruence
Exponent
Geometric Distribution
Surface