Algebra 1 Reference Cheat Sheet, Cheat Sheet of Algebra

Download Algebra 1 Reference Cheat Sheet and more Cheat Sheet Algebra in PDF only on Docsity! Page 1 of 2 Formulas Area ( A ) and Circumference ( C ) Name Shape Formula Rectangle A lw= Parallelogram A bh= Triangle 1 2 A bh= Trapezoid ( )1 2 1 2 A b b h= + Circle 2A r= π 2C r C d π π = = Formulas for Right Triangles Shape Formula Pythagorean Theorem 2 2 2a b c+ = Trigonometric Ratios sin a c =θ cos b c =θ tan a b =θ Special Right Triangles 30°–60°–90° 45°–45°–90° Volume ( V ) and Surface Area ( SA ) Name Shape Formula Right Rectangular Prism V lwh= 2 2 2SA lw hw lh= + + General Prism V Bh= SA = Sum of the areas of the faces Right Circular Cylinder 2V r h= π 22 2SA r rh= +π π Right Circular Cone 21 3 V r h= π 2SA r r= + π π Right Pyramid 1 3 V Bh= 1 2 SA B P= +  Sphere 34 3 V r= π 24SA r= π Polygon Angle Formulas Interior Angle Formulas Sum of the Interior Angles of a polygon with n sides = ( )180 2n° − Measure of an interior angle of an n-sided regular polygon = ( )180 2n n ° − w l h b h b b2 h b1 r d ac b x 2x x 3 60° 30° x 45° 45° x x 2 l h w B h B h r h l r h lh B r Algebra 1 Reference Cheat Sheet