ACT Math Test PLANE GEOMETRY CHEAT SHEET www.MathOnTime.com Expect FOURTEEN Plane Geometry problems on your ACT Math Test. Disclaimers: Even though it is called a “cheat” sheet, do not use this sheet during your actual test! Keep in mind that this page does not cover every con- cept you may need on the ACT Math Test. Also, this page may contain errors. If you find an error, we’d love to hear about it: service@MathOnTime.com © ...

 

Geometry Cheat Sheet Chapter 1 Postulate 1-6 Segment Addition Postulate - If three points A, B, and C are collinear and B is between A and C, then AB + BC = AC. Postulate 1-7 Angle Addition Postulate - If point B is in the interior of AOC, then m AOB + m BOC = m AOC. Adjacent Angles - two coplanar angles with a common side, a common vertex, and no common interior points. Vertical Angles - two angles ...

 

L1 GEOMETRIC REASONING CHEAT SHEET ABOUT THE STANDARD Geometric reasoning is all about understanding the basic rules of geometry and being able to apply them. Key topics are: Pythagoras Theorem Trigonometry Similar Shapes Angles of Polygons Angles around intersecting lines Angles around parallel lines Angles within circles Bearings Background knowledge in algebra will be required. STRATEGIES FOR SUCCESS Memorize the rules! Unfortunately, Geometric reasoning does require you to memorize lots of rules. In the exam, you will not be given ...

 

Geometry Cheat Sheet Parallel lines never touch ( = ) Perpendicular lines form a right angle ( + ) Intersecting lines cross each other ( x ) Symmetry means that you can fold it in half and both halves would be the same and { } are symmetrical Obtuse angles are larger than 90 degrees __/ Acute angles are smaller than 90 degrees < Right angles are 90 degrees L Scalene triangles have NO equal sides Isosceles triangles have ...