Matt James

Melzoo, Jul 16, 2014

Ch.3 slopes of parallel lines


  • 1. Slopes of parallel lines
  • 2. Slopes of Perpendicular Lines
  • 3. Points of Concurrency
  • 4. Station 2 - Orthocenter Activity
  • 5. Circumcenter Activity
  • 6. Lengths of parts of medians using the centroid
  • 7. Exterior Angle Inequality
  • 8. Angle from Side and Side from Angle Inequalities
  • 9. Triangle Side Inequality
  • 10. Triangle Proportionality Theorem
  • 11. Proportional segments of parallel lines
  • 12. Proportional segments by the angle bisector of triangle
  • 13. Pythagorean Theorem Proof
  • 14. Pythagorean Theorem Proof 2
  • 15. Classifying Triangles from the Pythagorean Theorem
  • 16. Altitude Forms Similar Triangles Animation
  • 17. Right Triangle Altitude Ratios
  • 18. Solving Right Triangles Quiz
  • 19. Interior Angles of Polygons
  • 20. Translation
  • 21. Coordinate Notation Translation Quiz
  • 22. Rotation of points in a triangle quiz
  • 23. Double Reflection Over Parallel Lines
  • 24. Double Reflection Over Intersecting Lines
  • 25. Congruent chords in a circle
  • 26. Finding the diameter of a broken dinner plate
  • 27. measure of inscribed angles = 1/2 the intercepted arc
  • 28. Demonstration of the Inscribed Angle
  • 29. Arc with Tangent Measures - Quiz
  • 30. Angle Measures from Intersection inside circle
  • 31. Finding Measures of Tangent/Secant Arcs
  • 32. intersection of secants, chords, and tangents of a circle
  • 33. Length of Chords, Secant Segments, and Tangent Segments
  • 34. formula for Area and Perimeter of Circle
  • 35. Finding the Area of a regular polygon
  • 36. Rotating Pyramid

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Slopes of parallel lines

Change the coordinates of lines to observe the two parallel lines. The slope-intercept form of the equations can be shown by clicking the checkbox. Can you determine how the slopes of parallel lines are related?

Matt James Lincoln Southwest High School Lincoln, NE mjames2@lps.org
– Melzoo

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