Classify Two-dimensional Figures
Aligned To Common Core Standard:
Grade 5 Geometry - 5.G.4
How to Classify Two-Dimensional Figures - Two-dimensional figures or shapes only have two measures of length (height and width) associated with them. We classify two-dimensional figures by looking for either parallel or perpendicular lines present within the figure. The prefix portion of the name of a shape indicates the number of sides of the figure. For example, a triangle has three sides and a quadrilateral has four sides. Quadrilaterals take on many different names based on the angles and lines structure of the figure. Squares are a dead giveaway because they contain four right angles and all their sides are equal. That differs from a rectangle that has two pairs of sides with equal length. Students will often confuse a rhombus with a trapezoid. A rhombus as two pairs of parallel sides and a trapezoid has only one pair of parallel sides. This will become much more common place for you as you gain experience working with these shapes.
Printable Worksheets And Lessons
- Properties of Quadrilaterals
Step-by-step Lesson- Tell us all the properties that you know
for each shape.
- Guided Lesson -
We ask you to name a specific set of quadrilaterals and see if we
can prompt you in number two.
- Guided Lesson Explanation
- There are a number of ways to answer these problems. Some people
worry about sides, corners about corners.
- Practice Worksheet -
Name each two dimensional figure that we throw at you.
- Identify Quadrilaterals
Five Pack - You may have to draw a few too.
- Building Quadrilaterals
Five Pack- We want fixed unit shapes. You might want to use
a pencil with a good eraser for this one..
- Matching Worksheet
- A nice mixture of problem types for you here.
- The Quadrilateral Family Worksheet Five Pack - Word problems that lead you towards naming a quadrilateral of some kind.
Make sure that you pay attention to the measure. They are there for a reason.
- Homework 1 - : A 4-sided flat shape with straight sides that has a pair of opposite sides parallel.
- Homework 2 - Identify the shape.
- Homework 3 - It has 10 points and 10 equal sides.
Some more shape reminders here. A lot of teachers tell me that they will give students the answers to these and ask them what the question is.
Math Skill Quizzes
I totally got carried away with my true/false questions here.
- Quiz 1 - Identify the statements (true/false). "The opposite sides of parallelogram are equal and parallel to each other."
- Quiz 2 - The diagonals of parallelogram are equal in length.
- Quiz 3 - The diagonals of square are parallel to the base.