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256

terms • Algebra 1 & Geometry

Math Vocabulary

Every term, the visual way. Each word comes with examples, a non-example, and often a short video—so students meet a concept by seeing it, not memorizing it. Find a term, project it, and let the noticing begin.

Visual examples

Many have videos

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A 5-minute routine

Introduce Any Term

Don’t lead with the definition—lead with the visual. Show the examples and non-example before the meaning, and let students build the word themselves.

1

Show, don’t define

Project the term with its examples and non-example. Hide the definition.

2

Notice & wonder

Ask: what do you notice? What makes the examples different from the non-example?

3

Describe it

Students try to put the meaning into their own words—then discuss as a class.

4

Reveal the definition

Now show the real definition. Play the video to lock it in.

Term

Parabola

Video

Example

Example

Non-Example

The Reveal

A parabola is the U-shaped curve that graphs a quadratic function.

Showing 12 of 256 terms

CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

If two triangles are congruent, their corresponding sides and angles are congruent.

Geometry

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Center of Dilation

The fixed point from which a dilation enlarges or reduces a figure.

Geometry

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Center of Rotation

The fixed point around which a figure rotates.

Geometry

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Coefficient

The number multiplied by a variable in a term, like the 3 in 3x.

Algebra 1

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Coincident Lines

Lines that lie on top of each other and share every point.

Algebra 1

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Combining Like Terms

Adding or subtracting terms with the same variable parts.

Algebra 1

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Complementary Angles

Two angles whose measures add to 90°.

Geometry

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Completing the Square

A method for rewriting a quadratic expression as a perfect square trinomial.

Algebra 1

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Composition of Transformations

Two or more transformations performed one after another on a figure.

Geometry

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Congruence Transformation

A transformation that preserves the size and shape of a figure.

Geometry

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Congruent Angles

Angles that have the same measure, regardless of their orientation.

Geometry

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Congruent Figures

Exactly the same size and shape, so figures match when laid on top.

Geometry

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Showing 12 of 256 terms

Every term here is pulled straight from our Algebra 1 and Geometry courses—where the same visuals come to life in full video lessons.

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