This is an entire unit on 2D Geometry. Topics that are included:
-identifying ray, point, line, segment, plane, skew lines, parallel lines
-congruent, adjacent, supplementary, complimentary, vertical angles
-classifying triangles by sides and angles
-determining a triangle by 3 given sides using triangle inequality or 3 angles adding to 180 degrees
-classifying quadrilaterals
-perimemter, circumference, area
-area of composite figures
-area of shaded figures
-proportions and scale drawings
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