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SAT Math Must-Know Facts & Formulas Numbers, …
www.erikthered.comSAT Math Must-Know Facts & Formulas Averages, Counting, Statistics, Probability average = sum of terms number of terms average speed = total distance
ACT Math Facts & Formulas Numbers, Sequences, Factors
www.erikthered.comACT Math Facts & Formulas a b a b m l a b b a a b b a Intersecting Lines Parallel Lines (l k m) Intersecting lines: opposite angles are equal. Also, each pair of angles along the same line