Question

This point lies inside a triangle if and only if all of its angles are acute. For 10 points each:
[10m] Name this point denoted “H” that is found at the intersection of the three altitudes of a triangle.
ANSWER: orthocenter
[10h] Along with the centroid and circumcenter, the orthocenter is used to define this construct. This construct is ill-defined for equilateral triangles because all three points coincide.
ANSWER: Euler line
[10e] The Euler line coincides with the line of symmetry in these triangles, which have exactly two sides with the same length.
ANSWER: isosceles triangles
<Other Science>

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Summary

2024 ACF Fall at CornellfallY911.11100%0%11%
2024 ACF Fall at Ohio StatefallY813.7575%50%13%
2024 ACF Fall at WashingtonfallY611.67100%17%0%
2024 ACF Fall at GeorgiafallY1112.73100%27%0%
2024 ACF Fall at North CarolinafallY1012.00100%20%0%
2024 ACF Fall at Claremont CollegesfallY522.00100%80%40%
2024 ACF Fall at RutgersfallY816.25100%50%13%
2024 ACF Fall at IllinoisfallY913.33100%33%0%

Data

Auburn AClemson B001010
Auburn BVanderbilt A001010
Emory ABelmont001010
Auburn CClemson A001010
Georgia Tech EFurman001010
Georgia Tech AGeorgia A001010
Emory OxfordSouth Carolina A1001020
South Carolina BAlabama A001010
SouthernTennessee A001010
Georgia Tech CTennessee B1001020
Georgia Tech DVanderbilt B1001020