J's answer to Maya's Primary 5 Maths Rate & Ratio Singapore question.
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This is a well known problem called Langley's Adventitious Angles. You can Google for solutions.
Here are some links :
http://gogeometry.com/LangleyProblem.html
https://www.mathpages.com/home/kmath277/kmath277.htm
Here are some links :
http://gogeometry.com/LangleyProblem.html
https://www.mathpages.com/home/kmath277/kmath277.htm
Date Posted:
2 years ago
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