## Use coordinates to prove simple geometric theorems algebraically. For example, prove or disprove that a figure defined by four given points in the coordinate plane is a rectangle; prove or disprove that the point (1, √3) lies on the circle centered at the origin and containing the point (0, 2).

14 Lesson(s)

Geometry » Unit: Transformations
Amsterdam, NY
Environment: Urban

Big Idea:

#### Name that transformation! Students will work at identifying transformations performed upon geometric figures.

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Favorites (15)

Resources (22)

Reflections (2)

Geometry » Unit: Tools of Geometry
Amsterdam, NY
Environment: Urban

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Favorites (8)

Resources (13)

### Why are lines parallel?

Algebra I » Unit: Linear Functions
Algebra I » Unit: Linear Functions
Rogers, AR
Environment: Rural

Big Idea:

#### The emphasis in this lesson is that students not only know the definition of parallel lines, but why lines are parallel.

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Resources (9)

Geometry » Unit: Coordinate Geometry
Amsterdam, NY
Environment: Urban

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Favorites (5)

Resources (14)

### The Basics of Coordinate Geometry

Geometry » Unit: Coordinate Geometry
Geometry » Unit: Coordinate Geometry
Amsterdam, NY
Environment: Urban

Big Idea:

#### Moving Geometry onto the coordinate plane. Let's investigate midpoints, slope, and distance!

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Favorites (10)

Resources (19)

Geometry » Unit: Coordinate Geometry
Amsterdam, NY
Environment: Urban

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Favorites (4)

Resources (9)

### Transformations Review

Geometry » Unit: Transformations
Geometry » Unit: Transformations
Amsterdam, NY
Environment: Urban

Big Idea:

#### Time for the unit review and pulling all of the concepts together!

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Favorites (4)

Resources (24)

Reflections (3)

Geometry » Unit: Coordinate Geometry
Amsterdam, NY
Environment: Urban

Big Idea:

#### What is a strategic use of tools? Let's use dynamic software to deepen our students' understanding of coordinate geometry!

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Favorites (3)

Resources (20)

Reflections (2)

Environment: Suburban

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Favorites (1)

Resources (11)

Reflections (1)

### End of Year Assessment

Geometry » Unit: Final Assessment
Geometry » Unit: Final Assessment
New York, NY
Environment: Urban

Big Idea:

#### This is a comprehensive assessment of all content learned to date.

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Favorites (1)

Resources (12)

Reflections (1)

Geometry » Unit: Final Assessment
New York, NY
Environment: Urban

Big Idea:

#### In this lesson, students complete a performance task based on paintings by Vasily Kandinsky as an alternative to a final exam or an extra credit assignment.

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Resources (5)

Geometry » Unit: Final Assessment
New York, NY
Environment: Urban

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Resources (11)

Reflections (1)

### Trapezoids

Environment: Suburban

Big Idea:

#### What's PART backwards and the rest ezoid?...Okay maybe that's too easy...but this lesson on trapezoids is sure to provide a challenge or two.

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Resources (12)

Reflections (1)

Geometry » Unit: Developing Logic and Proof
Environment: Suburban

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Favorites (1)

Resources (12)
Common Core Math