Geometry Formulas (MEMORIZE — Not Provided on ACT)

ACT Math · Axiom Academy

FORMULA SHEET Geometry Formulas to Memorize Unlike the SAT, the ACT gives you no formula sheet — every geometry formula here must be committed to memory before test day. Coordinate Geometry (Geometry-Related) Triangle area, Pythagorean theorem, special right triangles — appear on every test Circle area and circumference — appear on every test Rectangle/square area, trapezoid area — nearly every test Polygon angle sums — nearly every test Cylinder volume, rectangular prism volume — most tests Arc length, sector area, inscribed angles — most tests Cone, sphere, pyramid, rhombus — occasional, but free points if you know them

This is the written version of the interactive lesson above. See the full ACT Math course.