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Triangles perspective to a line are perspective to a point
Author:
Alex Kreitzberg
Topic:
Geometry
,
Geometric Transformations
,
Triangles
GeoGebra
New Resources
Parabolas, Lines and Nomograms
Squaring a Rectangle (PST Version)
Perpendicular Lines: Quick Exploration
Angle Addition Postulate (V2) - Integer Solutions
Congruent Sides & Angles in △s: Exploration
Discover Resources
Test #2 System of Equations
空間中直線AB與X軸歪斜
Hit "Start" and see what happens
Demo 4 Parents
Hannah_Intro to Invariants, two rectangles
Discover Topics
Similarity Transformation or Similarity
Vectors 2D (Two-Dimensional)
Standard Deviation
Derivative
Linear Programming or Linear Optimization