CK-12 Foundation
Ck 12: Geometry: Area and Perimeter of Trapezoids
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to find the area and perimeter of trapezoids. Students examine guided notes, review guided practice, watch instructional videos and...
Geometry Help
Geometry Help: Trapezoids
Explains the basic concept of trapezoids with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Math Open Reference
Math Open Reference: Median of a Trapezoid
Learn about the median of a trapezoid with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Trapezoid
Learn about trapezoids with this helpful reference tool. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Quia
Ixl Learning: Trapezoids
Brush up on your math skills relating to trapezoids then try some practice problems to test your understanding.
History is Fun
Jan Brett: Geometric Shapes Flashcards Pdf
Print out these colorfully illustrated PDF file pages to practice learning your basic two dimensional geometric shapes. Fold them in half and one side shows the shape while the other side shows the shape with the correct name. Put them...
Other
Ic Teachers: Shapes Quadrilaterals
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
Other
Algebra Lab: Areas and Perimeters of Triangles and Special Quadrilaterals
Learn how to find the areas and perimeters of triangles and special quadrilaterals.
Sophia Learning
Sophia: Coordinate Geometry of Isosceles Trapezoids: Lesson 3
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is an isosceles trapezoid in a coordinate plane. It is 3 of 5 in the series titled...
Ducksters
Ducksters: Kids Math: Quadrilaterals
Explore four-sided polygons called quadrilaterals on this site.
Sophia Learning
Sophia: Trapezoid Height and Base: Lesson 4
This lesson will demonstrate how to solve for an unknown height or base of a trapezoid when given the area. It is 4 of 5 in the series titled "Trapezoid Height and Base."
ClassFlow
Class Flow: Segments and Polygons
[Free Registration/Login Required] This flipchart reviews segments, parallel and perpendicular lines and then introduces polygons including quadrilaterals. It has many real world examples of shapes and includes Activote assessment.
Free Math Help
Free Math Help: Trapezoids
The lesson discusses trapezoids. The resource consists of an explanation, diagrams, and practice problems with solutions.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Trapezoid
Find a quick, concise explanation of what a trapezoid is. Examples are given and clearly explained.
ClassFlow
Class Flow: Two Dimensional Shapes Identify and Match
[Free Registration/Login Required] This flipchart helps students to analyze and compare various two-dimensional shapes according to the vertices, sides and parallel lines. It features "containers" created in Version 3 (can be used with...
ClassFlow
Class Flow: Area
[Free Registration/Login Required] This creative and engaging flipchart explains the area of all kinds of shapes, to include squares, parallelograms, rectangles, triangle, and trapezoids.
ClassFlow
Class Flow: Playing With Shapes
[Free Registration/Login Required] This flipchart is a small lesson for 2nd grade math-geometry. Once students have been introduced to the key vocabulary terms in geometry, the teacher can reinforce those shapes, terms, and some...
ClassFlow
Class Flow: Braun Shapes
[Free Registration/Login Required] This lesson is an in depth review of finding many shapes, their properties, and reinforcing first flipchart- Braun.
University of Cambridge
University of Cambridge: Nrich: Count the Trapeziums (Trapezoids)
The challenge at this one page website, is to see how many trapezoids (British-trapeziums) you can find in the figure. When you have your results, you can easily check it right at the website.
Rice University
Rice University: Cynthia Lanius: Hidden Polygon Activity
On this site students are instructed to locate different types of polygons on triangle grid paper. This page can be printed so that students can actually draw them. It also gives a definitions link for each polygon.
Expansion Learning
Expansion Learning: Math Activity: Know Your Shapes (Part 3)
Activity provides students the practice they need to master the skill of identifying shapes. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: What Shape Is This? (Part 3)
Activity provides students the practice they need to master the skill of identifying shapes. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Select the Shape (Part 3)
Activity provides students the practice they need to master the skill of identifying shapes. Immediate feedback is given.