ACT Instructor Tracey of Prepped & Polished, www.preppedandpolished.com, shares an overview of Geometry and Trigonometry concepts for the ACT Exam.
An overview of the Geometry and Trigonometry concepts
The breakdown of the geometry and trigonometry concepts tested on the ACT is as follows:
We have plane geometry problems, which are 23% of the math questions, and that equates to 14 questions. Coordinate geometry is 15% of math questions, so that’s nine questions, and trigonometry is 7% of the math questions, and that’s only four questions.
For those of you concerned about not having trigonometry, you’ll be taking it your junior year; if you may not take it at all, it’s only four questions. Either you can work with the tutor, or you can guess on these questions, or even eliminating these four questions should not hurt your score too much.
Plane Geometry concepts include
Perimeter and area of polygons – triangles, squares, rectangles, parallelograms and trapezoids
Different types of triangles such as equilateral, isosceles and similar triangles
Properties of circles
Translations, rotations and reflections
Coordinate Geometry concepts include
XY coordinate plane
Lines and slope – perpendicular and parallel lines
Graphs – points, lines, polynomials, circles and other curves
Distance and midpoint
Trigonometry concepts include
Sine, cosine and tangent – SOH CAH TOA
Cosecant, secant and cotangent
Graphs of the sine and cosine functions
Do you struggle on the ACT Geometry and Trigonometry section? Do you have any questions for Tracey? Post your tips/comments below.