This problem seems like it is impossible to solve because it does not have enough information. If the rectangle has an area of 10, what is the area of the triangle?

After posting the video, I was told 2001 AMC 12 problem 22 was nearly the same problem:
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My Books (worldwide links)
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My Books (US links)
Mind Your Decisions: Five Book Compilation
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A collection of 5 books:
"The Joy of Game Theory" rated 4.1/5 stars on 97 reviews
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"The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" rated 3.7/5 stars on 9 reviews
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"40 Paradoxes in Logic, Probability, and Game Theory" rated 4.2/5 stars on 19 reviews
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"The Best Mental Math Tricks" rated 4.3/5 stars on 21 reviews
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"Multiply Numbers By Drawing Lines" rated 4.6/5 stars on 14 reviews
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Mind Your Puzzles: Collection Of Volumes 1 To 3
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A collection of 3 books:
"Math Puzzles Volume 1" rated 4.4/5 stars on 28 reviews
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"Math Puzzles Volume 2" rated 4.4/5 stars on 9 reviews
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"Math Puzzles Volume 3" rated 4.1/5 stars on 7 reviews
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2017 Shorty Awards Nominee. Mind Your Decisions was nominated in the STEM category (Science, Technology, Engineering, and Math) along with eventual winner Bill Nye; finalists Adam Savage, Dr. Sandra Lee, Simone Giertz, Tim Peake, Unbox Therapy; and other nominees Elon Musk, Gizmoslip, Hope Jahren, Life Noggin, and Nerdwriter.

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