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Outline
Two-Dimensional Shapes and Their Attributes
Lines and Line Segments
Polygons
Angles
Triangles
Quadrilaterals
Two-Dimensional Shapes and Their Attributes
Author:
Lillian Petersen
Table of Contents
Lines and Line Segments
Explore Parallel Lines
Exploring Perpendicular Lines
Creating Lines
Polygons
Geoboard Polygons
Concave/Convex
Angles
How to Construct an Angle
Looking at Angles
Animated Acute Angles
Animated View of Obtuse Angles.
Types of Angles
Triangles
Triangle Lengths Exploration
Triangle Classification Challenge
Triangle Classification Examples
Triangle with Sides and Angles
Quadrilaterals
Quadrilaterals
Classifying Quadrilaterals
Next
Explore Parallel Lines
New Resources
Slope Between 2 Points (Phase 2)
Regular Star Polygons
Focus and Directrix
Regular Polygons and Equivalent Triangles
Sum of Squares: Proof without Words
Discover Resources
circles
cross-curve
Algebra of Plane Vectors
Special Right Triangles
Vector equation of line
Hole 7
Discover Topics
Derivative
Straight Lines
Linear Equations
Centroid or Barycenter
Random Variables
