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The distance formula in rectangular (Cartesian) coordinates is the Pythagorean Theorem in disguise. A lot of my students like this explanation. It helps build off of knowledge that they already have from geometry.

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from Mrs. E Teaches Math

Equations of Parallel and Perpendicular Lines INB Pages

Writing Equations of Lines Flipbook for algebra 1 or geometry interactive notebooks

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This 6-page guide picks up where the Geometry Part 1 guide left off. It contains…

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Christine touched on the topic of trigonometry, think my eyes glazed over a bit....

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High School Math Adventures with Mrs. B: Distance and Midpoint Formulas

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Turn your classroom into a Coordinate Plane to teach slope, graphing, distance formula, etc.! A perfect hands-on activity for math teachers.

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Where does the distance formula come from? Link to Pythagorean Theorem.

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27 questions all stuffed in to the same circle gives students a real challenge. This puzzle is great for any high school geometry lesson on circles. It contains angles with their vertex in the circle, on the circle, and outside of the circle. These angles are all made using diameters, chords, secants and tangents.

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Easy way to practice distance & midpoint formulas.

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Midpoint Formula: working it backwards.

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