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Omni-MATH / Let A₁A₂…A₁₉ be a regular nonadecagon. Lines A₁A₅ and A₃A₄ meet at X. Compute ∠A₇XA₅.

Problem

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problem

Let A1A2…A19A_{1} A_{2} \ldots A_{19} be a regular nonadecagon. Lines A1A5A_{1} A_{5} and A3A4A_{3} A_{4} meet at XX. Compute ∠A7XA5\angle A_{7} X A_{5}.
Plain-text mathematical notation (without MathML)
Let A₁A₂…A₁₉ be a regular nonadecagon. Lines A₁A₅ and A₃A₄ meet at X. Compute ∠A₇XA₅.
Original LaTeX notation
Let $A_{1} A_{2} \ldots A_{19}$ be a regular nonadecagon. Lines $A_{1} A_{5}$ and $A_{3} A_{4}$ meet at $X$. Compute $\angle A_{7} X A_{5}$.

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Source and history

task_id
7087e5de-639b-597e-874f-fe168fdd7b5e
task_key
test--7087e5de-639b-597e-874f-fe168fdd7b5e
task_revision_id
1
config / split
/ test

Official source

initial import