▽Table of Contents - Math Open Reference ●02/25 02:37 Math Open Reference Home Contact About Subject Index Algebra I Numbers and the Number Line Fractions, percents, ratios Functions Square roots and exponents Equations Linear equations Quadratic equations Plane Geometry Introduction to Plane Geometry Points, lines and planes Angles Parallel lines Triangles Quadrilaterals Polygons Congruence Similar polygons, triangles Circles and Arcs Ellipses Trans
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▽MathPuzzle.com ●06/28 16:20 Material added 27 June 2020 NPR Puzzle The NPR Puzzle is mine this week. Think of a 5-letter animal. Remove the middle letter, and two opposites remain. What animal is it? Heesch 4 Craig S. Kaplan: It seems appropriate to spend some of this quarantine computing coronas! Here’s the smallest polyiamond with Heesch number 4, a 20-iamond. Anagram We’re all in this together = We are still here ton