5th Grade Geometry - These are fun, very interactive PowerPoints that will help your students understand how to graph points on the coordinate plane and classify two-dimensional figures (polygons, triangles, quadrilaterals, etc.). PowerPoint #1 - Classifying Two-Dimensional Figures (20 slides): -Orientation/Vocabulary/Introduction to Polygons -Classifying Triangles (acute, right, obtuse, isosceles, equilateral, and scalene) -Classifying Quadrilaterals (regular and irregular, trapezoids, paralle