Type distance((x₁, y₁), (x₂, y₂)) for the exact length between two points. Skip the square-root arithmetic. The by-hand formula is in the distance formula.
Two points, one length
Radius from center to a point on the circle is this command. Midpoint of the same pair is a different leftover, in the midpoint function.
Desmos as a tool is in Desmos on the ACT.
The bottom line
distance((x₁, y₁), (x₂, y₂)). Read the number. Do not expand the squares by hand.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
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