| Answer Key | Full solutions to all puzzles. | Full solutions to all problems. | Full solutions to all problems. | Full solutions to all problems. | Answers to all problems + hints, checks, notes, or solutions. | Answers to all problems + hints, checks, notes, or solutions. |
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| Description | Each puzzle is shaped like a pyramid with 21 boxes. Some of the boxes are filled in with numbers. The challenge is to determine the missing numbers. The puzzles use a variety of mathematical patterns and are randomly arranged. | These word problems are designed to be solved using algebra. The examples and solutions use algebra. Chapter 2 includes an algebra refresher. | Compared to 101 Involved Algebra Problems, these 50 challenging algebra problems have shorter solutions (all 50 solutions were typed on a single page with explanations). Also, the 101 involved problems include some higher-level topics. | Challenge yourself with a variety of algebra problems that will make you think. The solutions are instructive. | The geometry of lines, angles, transversals, triangles, quadrilaterals, and polygons. Includes congruence, similarity, the triangle inequality, medians, bisectors, altitudes, and more. | The geometry of circles and 3D solids. Includes sectors, segments, lunes, chords, secants, tangents, inscribed shapes, circumscribed shapes, prisms, pyramids, spheres, cones, and more. |
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