Matching Pairs Matching Column GameOnline version Geometry Activity by Adanna Wright 1 Angle 2 Equilateral Triangle 3 Obtuse Angle 4 Parallelogram 5 Acute Angle 6 Right Angle 7 Perpendicular Line Segments 8 Rhombus 9 Vertex 10 Square 11 Intersecting Line Segments 12 Line Segment 13 Straight Angle 14 Scalene Triangle 15 Quadrilateral a rectangle having all four sides of equal length a triangle having three unequal sides and angles Figure formed by two rays. Line segments that cross each other an equilateral parallelogram having oblique angles A quadrilateral having both pairs of opposite sides parallel to each other Less than 90° and more than 0 ° a polygon with four sides An angle of 180°. one part of a line It is more than 90° and less than 180°. a triangle with all sides equal and all angles equal Angle that equals 90 degree. two line segments which cross to form 90 degree angles the intersection point of two sides of a plane figure