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Author:
Michael Borcherds
,
GeoGebra Materials Team
,
Mathguru
Heron's formula states that the area of a triangle with sides a, b, c is given by
where
Cyclic Quadrilateral
GeoGebra
Proof of Heron's Formula
New Resources
Road Runner (beep, beep)
What is an Isogonal Conjugate?
Exploring the Derivative of an Exponential Function
Open Middle Logarithm Exercises (1)
Taylor Polynomial
Discover Resources
Exterior Angles of Polygons (Updated with Negative Angles)
Exploring Increasing/Decreasing Behavior of a Function
Silder 3D
Incenter
Garis Berat
Discover Topics
Secant Line or Secant
Expected Value
Circumcircle or Circumscribed Circle
Cosine
General Quadrilateral