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# Lines, lines , and More Lines!

Lines, lines , and More Lines!. By: Ms. Rozelle 8 th Grade Math. Intersecting VS Perpendicular. Are they the same?? Noooo! Perpendicular lines intersect at a right angle! (90 degrees) Intersecting lines cross each other. Are all perpendicular lines intersecting lines?

## Lines, lines , and More Lines!

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### Presentation Transcript

1. Lines, lines, and More Lines! By: Ms. Rozelle 8th Grade Math

2. Intersecting VS Perpendicular • Are they the same?? • Noooo! • Perpendicular lines intersect at a right angle! (90 degrees) • Intersecting lines cross each other. • Are all perpendicular lines intersecting lines? • Are all intersecting lines perpendicular lines?

3. Skew VS Coplanar • Skew lines do not lie on the same plane! • Coplanar lines do! • Can skew lines also be intersecting or perpendicular lines? • Can coplanar lines also be intersecting or perpendicular lines?

4. Parallel VS Coincidental • Parallel lines lie in the same plane but never intersect! • Coincidental lines have equivalent linear equations and overlap at EVERY point! • Coincidental = One line on top of the other • Can skew lines also be coincidental lines? • Can parallel lines also be skew lines?

5. Equilateral VS Isosceles VS Scalene • Equilateral Triangle?? All sides are equal! • Isosceles Triangle?? Triangle with two equal sides! Angles opposite the equal sides are also equal. • Scalene Triangle?? Has three unequal sides!