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

Triangle Interior Angles: Quick Exploration
Slope Intercept Practice (Part 2)
Difference of Two Squares
Inscribed and Circumscribed Polygons
Drawing an Ellipse

Discover Resources

Slide 1
changing function 2
Leyes de Kirchoff - Circuito de Lazo Multiple
perpendicular line through a point
Investigation of Condition for Congruent Triangles ASA

Discover Topics

Square
Combinatorics
Probability
Diagrams
Arithmetic