2014 AMC 8 Problem 9
Attempt Problem 9 of the 2014 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 2014 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
9.
In is a point on side such that and measures What is the degree measure of
Answer: D
Small hint:
Since , triangle is isosceles.
Big hint:
Find , then use the straight angle at .
Solution:
Since , triangle is isosceles, so .
Thus Because are collinear, and form a straight angle, so .
Thus, D is the correct answer.
Problem 9 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
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- 1989 AMC 8
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- 1991 AMC 8
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