GeoGebra
GeoGebra
Home
News Feed
Resources
Profile
People
Classroom
App Downloads
Angle Sum formula via Ptolemy's Theorem
Author:
Madeleine Jetter
Assume α, β, γ, and δ are acute such that α + β + γ + δ = π. Find the sides and diagonals of the quadrilateral.
GeoGebra
What if α+δ is a right angle?
New Resources
Cube of a Binomial - Volume Model
Probability and Geometry
Thin Slice: Using Trig Ratios to Solve for R.Triangle Sides
Transformation of curves
Thin Slice: Using Trig Ratios to Solve for Sides of Right Triangles
Discover Resources
agyhuijkopl
material-2114825(B)
Untitled
Dynamic Witch of Agnesi
Limit Exploration 3
Discover Topics
General Quadrilateral
Terms
Centroid or Barycenter
Geometric Transformations
Probability