Parallel & Perpendicular

Lines that never meet are parallel; lines that meet at a right angle are perpendicular

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About This Practice

Two lines on the same plane can only relate in three ways: intersecting, parallel (never meeting), or perpendicular (meeting at a right angle). Drag the endpoints to spin these two segments and watch when the equal-distance dashes and the right-angle square appear — your hands will remember what the definitions look like. Random mini-tasks ask you to make the segments parallel or perpendicular.

Drag the endpoints to rotate two segments, watch the relationship change live among intersecting, parallel and perpendicular, then take the challenge.

EasyEstimated Time: 10minparallelperpendicularintersectingright angle

How to Play

  1. Look at the two segments: drag any endpoint and the segment rotates around its midpoint.
  2. Check the status line: intersecting, parallel or perpendicular right now?
  3. When perpendicular, find the right-angle square at the crossing; when parallel, spot the equal dashes.
  4. Take the task: rotate the segments into the required relationship to succeed.
  5. Tap New Task and try to be quick and accurate.

Learning Objectives

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