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