Use these flashcards to practice math terminology throughout the year. This set includes 29 printable flashcards with the following geometry terms:line, intersecting lines, parallel lines, perpendicular lines, ray, endpoint, line segment, angle, acute angle, right angle, obtuse angle, polygon, pentagon, hexagon, octagon, decagon, triangle, quadrilateral, parallelogram, rectangle, rhombus, trapezoid, square, open shape, closed shape, vertex, edge, perimeter, and area.Instructions included on fir