In this topic, students will:
identify quadrilaterals and use attributes to describe them
classify shapes according to their attributes
analyze and compare quadrilaterals and group them by their attributes
Vocabulary:
Polygon - a closed figure made up of straight-line segments
Side - a line that connects to points of a shape
Quadrilateral - a polygon with exactly four sides
Angle - an angle is formed when two straight lines or rays meet at a common endpoint
Vertices (vertex) - corner points where 2 sides of a polygon meet or where edges of a solid figure meet. One corner point is called a vertex.
Trapezoid - a quadrilateral with only one pair of sides on lines that never cross
Parallelogram - a quadrilateral with two pairs of sides with the same length
Rectangle - a parallelogram with four right angles
Right angle - forms a square corner
Rhombus - a parallelogram with all sides the same length
Square - a parallelogram with four right angles and all sides the same length
Convex - a polygon that has one or more angles pointing inward.
Concave - all angles in a polygon that point outward