lesson
Two kinds of line pair
1 · Learn
Parallel straight lines stay the same distance apart and do not meet, however far they continue. Perpendicular lines meet at a right angle.
A horizontal line goes across a page in our drawing; a vertical line goes up and down. A horizontal and a vertical line that meet form a right angle.
2 · Worked example
Opposite sides of a rectangle are parallel. Neighbouring sides meet at right angles, so they are perpendicular.
3 · Your turn
Are two opposite sides of a rectangle parallel or perpendicular to each other?
Check your answer
Parallel. Adjacent sides are perpendicular.
4 · Apply your learning
Find and draw examples using a ruler. Extend the lines mentally instead of judging only a very short segment.
Adult guidance and safety
Use objects or a drawn model before relying on a rule. Explain each step, check the units and revisit with varied examples. An adult can read the instructions without supplying the answer.
Open your writing and drawing pad
Write, draw or show your working. Use a mouse, pen or finger. This pad is not a submitted answer.
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Open a picture saved on this device to draw on it again. Opening replaces the drawing, but Undo can restore it. PNG only, up to 4 MB and 4096 × 4096 pixels. The picture stays in this browser; it is not uploaded. Paper lines in a saved picture become part of that picture.
Clear the drawing? Your typed notes will stay. You can undo this action.
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Open a UTF-8 TXT file from this device, up to 40 KB and 10,000 characters. It stays in this browser. Opening can be undone until you type again. Downloads keep a new copy; they do not change the file you opened.
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Typed notes are not submitted answers.
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