M
Math Coach Amy
Amy Ferguson Moncure

Geometry – Finding Center and Radius

Identify the center and radius from a given circle equation (including completing the square).

Question ID Difficulty Topic Focus
d03e29f1 Easy Finding center and radius
5011b039 Medium Finding center and radius
856372ca Medium Finding center and radius
b96ff36e Medium Finding center and radius
ee540927 Medium Finding center and radius
fc8aa563 Medium Finding center and radius
2266984b⭐⭐⭐ Hard Find the center given an ugly circle equation
24cec8d1 Hard Finding center and radius
35d37640 Hard Finding center and radius
6585d841 Hard Finding center and radius
76c73dbf⭐⭐⭐ Hard Find the radius given an ugly circle equation
9acd101f Hard Finding center and radius
9adb86ed Hard Finding center and radius
9d159400 Hard Finding center and radius
9e44284b Hard Finding center and radius
a38c0183 Hard Finding center and radius
ab176ad6 Hard Finding center and radius
e50afdd3⭐⭐⭐⭐ Hard Given a circle equation in standard form and a line tangent to the circle, what point can be on the tangent line
e80d62c6 Hard Finding center and radius

Tip: Search these exact Question IDs in the College Board SAT Suite Question Bank, Geometry and Trigonometry, skill Circles for full questions and rationales.

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