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📐 Mathematics - Class 6
Lesson 14 · Lines and Angles

Lines and Angles Presentation

MathematicsSubject
8 minEstimated read
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Mathematics, Grade 6, Unit Five: Geometry

Lines and Angles

Three kinds of line pair · Five kinds of angle · Construction with ruler, set square and compass

What We Will Learn Today

✂️

Recognise intersected, perpendicular and parallel lines

📐

Draw parallel and perpendicular lines with set squares

🧭

Draw a perpendicular bisector and an angle bisector with a compass

📏

Sort the five kinds of angle and construct them

Lines That Cut and Lines That Do Not

✖️Intersected lines
They cut at exactly one point
That place is the point of intersection
If the angle is \( 90^\circ \) they are perpendicular
VS
🛤️Parallel lines
They never cut
The perpendicular distance is equal everywhere
Written as \( AD // CB \)

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Presenter notes: Today's lesson is about lines and angles. Ask the students to point out where they can see lines and angles inside the classroom itself, in the door, the window and the desks.