1997 AMC 8 Problem 12
Attempt Problem 12 of the 1997 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 1997 AMC 8 solutions, or check the answer key.
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12.
Find
Answer: D
Small hint:
Use the supplementary condition and then angle equals angle
Big hint:
First find angle from the left triangle
Solution:
We have that using the fact that the interior angles of a triangle add to
This tells us that since and are supplementary.
Finally,
Thus, D is the correct answer.
Problem 12 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
- 1988 AMC 8
- 1989 AMC 8
- 1990 AMC 8
- 1991 AMC 8
- 1992 AMC 8
- 1993 AMC 8
- 1994 AMC 8
- 1995 AMC 8
- 1996 AMC 8
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- 1999 AMC 8
- 2000 AMC 8
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