1971 AHSME Problems/Problem 5
Contents
Problem 5
Points , and lie on the circle shown and the measures of arcs and are and respectively. The sum of the measures of angles and is
Solution 1
We see that the measure of equals , and that the measure of equals . Since , the sum of the measures of and is .
Solution 2
Arcs are measured by the angle measures of their corresponding central angles. Thus, the inscribed angle , and, likewise, . Thus, by supplementary angles, , and . Because the sum of the interior angle measures of a quadrilateral add to , we see that . Thus, our answer is .
See Also
1971 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 4 |
Followed by Problem 6 | |
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