Students learn that line segments can meet at a common endpoint. Given an example, they count the number of line segments with a common endpoint
A. Explore the attributes of a line segment
C. Identify angles
D. Identify the number of segments and angles in a triangle
E. Use a drafting triangle to identify right angles
F. Identify the number of segments and angles in a rectangle
G. Create polygons with closed segment chains
H. Identify polygons
I. Determine the number of sides or angles of a given polygon (Level 1)
J. Determine the number of sides or angles of a given polygon (Level 2)
K. Determine how many sides a polygon can have
L. Identify quadrilaterals
M. Identify pentagons
N. Identify hexagons
O. Sort and label polygons by the number of sides
P. Explore attributes of a rectangle
Q. Find opposite sides of a rectangle and their length
R. Find the lengths of a rectangle's sides
S. Solve riddles with the attributes of polygons
T. Explore attributes of a square
U. Review the attributes of squares, rectangles, and quadrilaterals
V. Explore attributes of a rhombus
W. Determine when a rhombus is also a square
X. Identify rhombuses and their attributes
Y. Review attributes of polygons