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Perimeter and Area using Diagonals
Author:
Ally Pitalo
Explains how to find the perimeter and area with only diagonals.
GeoGebra
New Resources
Parallelograms: Quick Investigation
alg2_05_05_01_applet_exp_2_flvs
Variation Theory Parallelogram Proofs
Poorly Drawn Parallelograms 3
Blancmange curve (fractal)
Discover Resources
Vertical Parabolas Conics Directrix, Focus, Latus, Sliders
Visualize the area of a circle
The reciprocal function
Major Chord Ratio
Triangle Inequality
Discover Topics
Solids or 3D Shapes
Symmetry
Median Line
Arithmetic
Tangent Line or Tangent