G1-G3 Quadrilateral Study Nomenclature


Move beyond dry geometry memorization. These Montessori Geometry Nomenclature Cards foster a deep, concrete understanding of geometric vocabulary through an interactive, multi-sensory experience perfectly tailored to the way children learn best. Use them with all of your Montessori materials such as the Box of Sticks and Geometry Cabinet.

Designed for ages 6-12, each term is featured on an individual, index-card sized card with a clear image, definition, and engaging etymology to tie into word study. The hands-on cards directly align with Montessori geometry lessons, making them an ideal resource for Montessori classrooms and homeschools.

Once terms are learned, reinforce knowledge using the included control poster – a simple reference chart for children.


  • See list below for terms defined
  • 4 suggested activities for how to use these cards in the elementary classroom.
  • 3 Printable pages that list all of the terms.
  • Control Posters. These are on letter-sized paper.

The nomenclature cards are the size of index cards (3″ x 5″), this gives you a ton of options for storage and is a very manageable size for elementary students. Letter-sized pages are meant to be printed double sided.

Vocabulary Terms included:

Kinds of Quadrilaterals G1
  • Common Quadrilateral
  • Trapezoid
  • Parallelogram
  • Rectangle
  • Kite
  • Rhombus
  • Square
Parts of a Trapezoid G2
  • Major Base
  • Minor Base
  • Height
  • Scalene Trapezoid
  • Isosceles trapezoid
  • Tri-equilateral Trapezoid
  • Right-angled Trapezoid
  • Acute Trapezoid
  • Obtuse Trapezoid
Parts of a Kite G3
  • Major Diagonal
  • Minor Diagonal


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