1. Slide

60 seconds

2. Word cloud

180 seconds

What comes to mind when you think about geometry and its basic concepts?

3. Slide

60 seconds

Geometry was not invented by the Greeks - it was first developed in ancient Egypt and Babylon.

Did you know?

4. Slide

60 seconds

5. Slide

60 seconds

6. Slide

60 seconds

7. Drawings

450 seconds

Draw and label a point

8. Slide

60 seconds

9. Slide

60 seconds

10. Poll

60 seconds

What is a line in geometry?

- A closed shape with three or more sides
- A curved shape with no endpoints
- A straight path that extends infinitely in both directions

11. Drawings

450 seconds

Draw and label a line

12. Poll

60 seconds

How many points are needed to define a line?

- Three
- Two
- Four

13. Personalised Feedback

360 seconds

Can you define and name a line in geometry?

14. Drawings

450 seconds

Brain break: Draw a wobbly alien with wiggly arms and three eyes sticking out its head

15. Slide

60 seconds

16. Slide

60 seconds

17. Poll

60 seconds

What is a plane in geometry?

- A solid three-dimensional figure with flat surfaces and straight edges
- A two-dimensional flat surface that extends infinitely in all directions
- A curved line that does not intersect itself

18. Slide

60 seconds

19. Drawings

450 seconds

Draw and label plane DOGS

20. Open question

180 seconds

Work together in pairs: Q: What is a plane in geometry, and can you name an example?

21. Slide

60 seconds

22. Slide

60 seconds

23. Poll

60 seconds

Which of the following statements is true about collinear points?

- Collinear points are always equidistant from each other.
- Collinear points lie on the same line.
- Collinear points form a triangle.

24. Drawings

1260 seconds

Question: Given three points on a plane, how can you tell if they are collinear? Clues: • Remember that collinear points are all on the same line. • Look at the slope of the line connecting the points. • If the slope is the same, then the points are collinear. In pairs: Select and solve one of the tasks: A. Work in pairs to draw a set of three points that are collinear. B. Work in pairs to draw a set of three points that are noncollinear.

25. Slide

60 seconds

26. Poll

60 seconds

Which of the following statements is true about coplanar points?

- Coplanar points can be on different planes.
- Coplanar points lie on the same plane.
- Coplanar points are always collinear.

27. Slide

60 seconds

28. Slide

60 seconds

29. Slide

60 seconds

30. Slide

60 seconds

31. Slide

60 seconds

32. Slide

60 seconds

33. Poll

60 seconds

What is the maximum number of lines that can be drawn through two coplanar points?

- One
- Infinite
- Two

34. Open question

180 seconds

What is the definition of collinear points?

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