Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson

Outline

  1. Dynamic proofs
    1. Area of Trapezoid - Midsegment
    2. Area of Trapezoid - Triangles
    3. Law of Sines - Acute Angle
    4. Law of Sines - Obtuse Angle
    5. Euclid’s theorem of leg
    6. Euclid’s theorem of altitude
    7. Proof of Pythagoras' theorem (Henry Perigal)
    8. 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

  • Function art 3D - waiting shed (v2)
  • Basic and Compound Inequality Illustrator
  • GeoGebra 3D Modeling Workshop (March 8 2024)
  • Congruent Figures
  • Right Triangle Inscribed in a Semicircle

Discover Resources

  • Xác suất
  • CÍRCULO TRIGONOMÉTRICO
  • Exercício baricentro
  • Bài tập 12 trang 51
  • System Starters

Discover Topics

  • Statistical Characteristics
  • Continuity
  • Frequency Distribution
  • Constructions
  • Perimeter
AboutPartnersHelp Centre
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®