Geometry Two Dimensional figures
5th Grade Common Core Geometry Standards
Classify twodimensional figures into categories based on their properties.
Understand that attributes belonging to a category of twodimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Classify twodimensional figures in a hierarchy based on properties.
Classify twodimensional figures into categories based on their properties.
Understand that attributes belonging to a category of twodimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Classify twodimensional figures in a hierarchy based on properties.
Lesson 1: Attributes of twodimensional figures
Lesson 2: Classify Twodimensional Figures 
Vocabulary
•circle
•congruence/congruent •equilateral triangle •half circle/semicircle •hexagon •irregular polygon •isosceles triangle •kite •obtuse angle •parallel lines •parallelogram •pentagon •perpendicular lines •plane figure •polygon •quadrilateral •rectangle •regular polygon •right angle •right triangle •rhombus/rhombi •scalene triangle •square•triangle •trapezoid •twodimensional•vertex Online Resources
