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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
Rings of circles
Roman Numerals Bingo
Art and Rotational Symmetry
Road Runner (beep, beep)
Oriented Angles and the Unit Circle
Discover Resources
Luas dan keliling layang-layang
Area Formula
Right (b)copy
Pentagon Hexagon Bounds
Using Dot Plots to Answer Statistical Questions: IM 6.8.5
Discover Topics
Power Functions
Variance
Linear Programming or Linear Optimization
Volume
Tangent Function