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Midline Surprise
Author:
Ted Courant
Two 45º-45º-90º triangles are placed side-to-side, as shown, and midpoints of the indicated segments are joined.
GeoGebra
Prove that the resulting quadrilateral is a square.
New Resources
Introduction
Napoleon's Theorem
Rose Curve - A Classical Construction
Cross Product in 2D and 3D
Teorema Japonês para quadriláteros inscritos em uma circunferência
Discover Resources
la météorite
snowflake or is it
Girl in the mirror
Project part 1
Part 1 #1: Properties of Isosceles Triangles
Discover Topics
Symmetry
Parallelogram
Correlation
Pie Chart or Circle Chart
Scatter Plot