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Classify Two-Dimensional Figures
Use precise geometric language, diagrams, and reasoning to organize two-dimensional figures in a hierarchy.
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Beginner
15–20 minutes
Geometry
Geometry
Page 11 of 21
Inside Cover
Classify Two-Dimensional Figures
At a Glance
Binder SectionGeometry
DifficultyBeginner
Estimated Time15–20 minutes
PrerequisitesNone
How can a labeled geometric model help us organize two-dimensional figures in a hierarchy?
Visual Model
4Thousands
3Hundreds
2Tens
7Ones
4,327 = 4,000 + 300 + 20 + 7
Goals
Learning Targets
- I can name and label the important parts of a geometric figure.
- I can choose a definition, property, transformation, or formula that fits.
- I can use a diagram to explain and check my result.
Click each word
Interactive Vocabulary
Add a student-friendly definition in the Binder Page editor.
Add a student-friendly definition in the Binder Page editor.
Add a student-friendly definition in the Binder Page editor.
Add a student-friendly definition in the Binder Page editor.
Add a student-friendly definition in the Binder Page editor.
Reveal one step at a time
Worked Examples
Example 1
Place squares in a shape hierarchy
1
Every square is a rhombus and rectangle.
2
Every rhombus and rectangle is a parallelogram.
3
Therefore every square is a parallelogram.
Notice and correct
Common Misconceptions
Using a picture that does not match the question
Label every given length, angle, point, and shape.
Choosing a rule before identifying the figure
Name the shape and what is known first.
Mixing area, surface area, and volume
Use square units for area and cubic units for volume.
Assuming a drawing is to scale
Use the stated measurements and markings, not appearance alone.
Learn Through Video
Watch, pause, and explain
Use the chapter markers, key vocabulary, and reflection prompts to stay actively engaged while you watch.
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Warm-Up
Guided
Independent
Challenge
1
Quick Start
Warm-Up
Directions: Study the figure. Label what is given, name the geometric idea you will use, show your work, and enter the final answer.
Is every rectangle a parallelogram?
Picture the measurementUse the picture to organize what you know before you solve.
2
We Do
Guided Practice
Directions: Follow the steps. Draw or inspect the matching figure, label every known value, choose the geometric rule, and solve.
Is every parallelogram a rectangle?
Picture the measurementUse the picture as you work through each step.
Step 1: Identify the given geometric information and what you need to find.
Step 2: Draw or label a matching figure before choosing a rule.
3
You Do
Independent Practice
Directions: Work independently. Make a matching diagram, show each reasoning step, include units when needed, and enter the final answer.
Create a hierarchy for quadrilaterals and explain one relationship.
Picture the coinsUse the picture to organize what you know before you solve.
4
Stretch Your Thinking
Challenge & Real-World Practice
Create and solve your own geometry problem. Make every part of the visual match the question. || Create a new problem that asks someone to organize two-dimensional figures in a hierarchy. Include a precise labeled diagram, solve it, and explain how the picture proves the result. | Answers vary | Identify the given geometric information and what you need to find. | Draw or label a matching figure before choosing a rule. | Use the labeled figure, apply the correct definition or formula, solve step by step, include units when needed, and check the result.
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Before you begin, I can…
- I can use correct geometric vocabulary.
- I can make a diagram that matches every part of a problem.
- I can justify a classification, measurement, or transformation.
1
Question 1
What should a useful geometry diagram include?
2
Question 2
What do congruent figures have?
3
Question 3
Which units describe area?
4
Question 4
What should you do before selecting a formula?
5
Question 5
How can a diagram help check an answer?
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Badge EarnedClassify Two-Dimensional Figures Master
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