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# Geometry (all content)

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Start from the basics

Learn the basics, starting with Lines, line segments, and rays

Special right triangles: TrigonometryIntroduction to the trigonometric ratios: TrigonometrySolving for a side in a right triangle using the trigonometric ratios: TrigonometrySolving for an angle in a right triangle using the trigonometric ratios: TrigonometryModeling with right triangles: Trigonometry

## Get StartedLines, line segments, and rays

Let's draw points, lines, line segments, and rays. We'll also think about perpendicular and parallel lines and identify these in two-dimensional figures. Common Core Standard: 4.G.A.1

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