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1975 Canadian MO Problems/Problem 5

Revision as of 16:44, 4 August 2016 by Memc38123 (talk | contribs) (Created page with "== Problem 5 == <math>A, B, C, D</math> are four "consecutive" points on the circumference of a circle and <math>P, Q, R, S</math> are points on the circumference which are re...")
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Problem 5

$A, B, C, D$ are four "consecutive" points on the circumference of a circle and $P, Q, R, S$ are points on the circumference which are respectively the midpoints of the arcs $AB, BC, CD, DA.$ Prove that $PR$ is perpendicular to $QS$.

Solution

None yet!

1975 Canadian MO (Problems)
Preceded by
Problem 4 		1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • Followed by
Problem 6


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