GeoGebra
  • Create Class
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License
Language: English

© 2021 GeoGebra

Proof Prompt (A)

Author:
Tim Brzezinski
Topic:
Angles, Intersection, Straight Lines
Theorem: If two lines cross to form congruent, adjacent angles, then those lines are perpendicular. Write a 2-column (or paragraph) proof that formally proves what this applet informally illustrates. Be sure to set up an appropriate diagram, state what is given, and state what needs to be proven. Then prove it!

Proof Prompt (A)

Proof Prompt (A).pdf

Proof Prompt (A).pdf

Related Topics

  • Congruence
  • Conic Sections
  • Constructions
  • Coordinates
  • Fractal Geometry

Discover Resources

  • X+Y+Z=?
  • Mounkaila_G2_Transitions
  • Modul 14B_Wa Ode Eva Devianti_SMAN 2 Baubau
  • ТреугольникПрокопенко
  • Shape of Constant width

Discover Topics

  • Quadratic Equations
  • Linear Regression
  • Expected Value
  • Unit Circle
  • Hypothesis Testing

GeoGebra

  • About
  • Partners
  • Testing
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Language: English
  • Terms of Service Privacy License
  • Facebook Twitter YouTube