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# Unit 9: Relating algebra and geometry

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## About this unit

Let's explore how geometry and algebra intersect. Did you think the Pythagorean theorem was just for triangles? It shows up all over the place, like in the equation for a circle or in the distance between two points. We'll also learn how slope relates to parallel and perpendicular lines.

### Learn

### Practice

- Distance between two pointsGet 5 of 7 questions to level up!
- Midpoint formulaGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

### Learn

### Practice

- Features of a circle from its standard equationGet 3 of 4 questions to level up!
- Graph a circle from its standard equationGet 3 of 4 questions to level up!
- Write standard equation of a circleGet 3 of 4 questions to level up!

### Learn

### Practice

- Features of a circle from its expanded equationGet 3 of 4 questions to level up!
- Graph a circle from its expanded equationGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

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Level up on all the skills in this unit and collect up to 700 Mastery points!