GoGeometry Action 28! (Quick Angle Problem)

Author:Tim Brzezinski

Creation of this applet was inspired by a tweet from Antonio Gutierrez. What is the measure of the pink angle? How can you formally prove this to be true?

New Resources

From Polar to Cartesian Coordinates
random coprime pairs
Visualizing the Pythagorean Identity with Sine and Cosine
函數的奇偶性
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Discover Resources

Graphing Functions
Same Side Exterior Angles Theorem
Dynamic Wksheet Sample
Nasty Minimisation, second example
Slope of a Striaght Line

Discover Topics

Random Experiments
Terms
Confidence Interval
Upper and Lower Sum or Riemann Sum
Exponential Functions