The Complete Quadrilateral

Author:: Steve Phelps

The complete quadrilateral consists of four coplanar straight lines – l₁, l₂, l₃and l₄– intersecting in three pairs of opposite vertices – A₁₄, A₂₃ , A₁₃, A₂₄ , A₁₂and A₃₄.

New Resources

Writing Equivalent Polar Coordinate Representations of Points
Plotting Points in Polar Coordinates
Proving Angles formed by Parallel Lines
Mosaics
Thin-Slicing a Geometry Proof

Discover Resources

Center of Mass for Four Objects
twinkie
pythagorean theorem
Perpendicular Line Through a Point
Pythagorean Theorem in Hyperbolic Geometry in the Poincaré Disk--using soundmanbrad's tools

Discover Topics

Translation
Percentages
Conic Sections
Differential Calculus
Circumcircle or Circumscribed Circle