4.GM.5
Classify two-dimensional figures based on the presence or absence of parallel lines, perpendicular lines, or angles of a specified size, involving quadrilaterals and triangles. Shapes include: quadrilaterals (trapezoid, parallelogram, rectangle, square, rhombus) and triangles (right, acute, obtuse)
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?
A kite has two pairs of adjacent sides that are equal.
A rhombus has four sides of equal length.
Is every kite also a rhombus?
A rhombus has four sides of equal length.
Is every kite also a rhombus?
A rhombus has four sides of equal length.
A square has four sides of equal length and four right angles.
Is every square also a rhombus?
A square has four sides of equal length and four right angles.
Is every square also a rhombus?
Khan Academy ResourcesTypes of triangles reviewQuadrilaterals reviewQuadrilateral typesClassify triangles by anglesClassify triangles by both sides and anglesClassify triangles by side lengthsClassify shapes by line and angle typesQuadrilateral propertiesWorked example: Classifying triangles Classifying triangles by anglesClassifying shapes by lines and anglesClassifying triangles Classifying shapes by line and angles types
1-on-1 AI tutoring aligned to 4.GM.5. 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 →