Classify triangles or quadrilaterals into different categories based on shared defining attributes. Explain why a triangle or quadrilateral would or would not belong to a category.
Example Problems
A rectangle has four right angles.
A parallelogram has two pairs of parallel sides.
Is every rectangle also a parallelogram?
A parallelogram has two pairs of parallel sides.
Is every rectangle also a parallelogram?
Triangle ABC has the following vertices:
A
B
C
Is triangle ABC a right triangle?
A
B
C
Is triangle ABC a right triangle?
Triangle ABC has the following vertices:
A
B
C
Is triangle ABC a right triangle?
A
B
C
Is triangle ABC a right triangle?
Khan Academy ResourcesTypes of triangles reviewProperties of shapes: FAQQuadrilaterals reviewPolygons reviewQuadrilateral typesClassify triangles by anglesClassify triangles by both sides and anglesClassifying shapesProperties of shapesIdentify quadrilateralsClassify triangles by side lengthsClassify shapes by line and angle typesIntro to quadrilateralQuadrilateral propertiesKites as a geometric shapeClassifying quadrilateralsWorked example: Classifying triangles Classifying triangles by anglesQuadrilateral typesClassifying shapes by lines and anglesClassifying triangles Classifying shapes by line and angles types
1-on-1 AI tutoring aligned to MA.5.GR.1.1. Instant help for students, real-time insights for teachers.
Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.
Free for teachers, forever →