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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
Road Runner (beep, beep)
Shade a spheric triangle with "surface".
Open Middle Logarithm Exercises (1)
aperiodic monotile construction_step by step
Taylor Polynomial
Discover Resources
Angles in the same Segment
Start, parallel to line through point
special right triangles
Intersections of Planes
LLL: Ejercicio 3
Discover Topics
Random Experiments
Expected Value
Standard Deviation
Unit Circle
Similar Triangles