505. Two tangent lines at the endpoints of a given arc containing 120° are drawn, and a circle is inscribed into the figure bounded by these tangent lines and the arc. Prove that the circumference of this circle is equal to the arc length of the given arc.
505. Two tangent lines at the endpoints of a given arc containing 120° are drawn, and a circle is inscribed into the figure bounded by these tangent lines and the arc. Prove that the circumference of this circle is equal to the arc length of the given arc.
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter8: Areas Of Polygons And Circles
Section8.CR: Review Exercises
Problem 35CR
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