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Outline
Dynamic proofs
Area of Trapezoid - Midsegment
Area of Trapezoid - Triangles
Law of Sines - Acute Angle
Law of Sines - Obtuse Angle
Euclid’s theorem of leg
Euclid’s theorem of altitude
Proof of Pythagoras' theorem (Henry Perigal)
Euler's formula for polyhedra
Dynamic proofs
Author:
Irena Štrausová
Area of Trapezoid - Midsegment
Area of Trapezoid - Triangles
Law of Sines - Acute Angle
Law of Sines - Obtuse Angle
Euclid’s theorem of leg
Euclid’s theorem of altitude
Proof of Pythagoras' theorem (Henry Perigal)
Euler's formula for polyhedra
Next
Area of Trapezoid - Midsegment
New Resources
Stairs (Optical Illusion)
Simplifying Radicals: Geometric Thin Slice
Isosceles Triangle: Quick Construction
Rose Curve - A Classical Construction
Teorema Japonês para quadriláteros inscritos em uma circunferência
Discover Resources
sine_function
GeoGebra_Activity
Cyclic quadrilateral
Zbir unutrašnjih uglova četverougla
Act 2 - Equidistant Arena
Discover Topics
Tangent Line or Tangent
Kite
Differential Equation
Straight Lines
Indefinite Integral