Pencil Angle

Author:John Golden

Slight generalization of a Brilliant.org problem. What will the angle between the pencils be if they are put together tightly tip to tip? (The original problem asked when both pencils were 30 degrees.)

New Resources

挂谷问题——三尖瓣形
Squares Question
Pythagorean Theorem: Quick Illustrator
Pythagorean Template: Integer Legs
What Do You See? (2)

Discover Resources

Jonathan Labs
Octant Vector Random
Polygon illusion
Fourier
Measuring the angle of a triangle.

Discover Topics

Probability
Tangent Line or Tangent
Geometry
Inequalities
Polynomial Functions