1. Word cloud

120 seconds

What is the measure of a right angle?

2. Slide

60 seconds

An angle is formed when two straight lines meet. Angles are measured in degrees. Angles can be acute, right, or obtuse.

What are Angles?

3. Slide

60 seconds

Angle: an angle is formed when two lines meet at a point. Right Angle: a right angle has an angle measure of 90 degrees. Acute Angle: an acute angle has an angle measure of less than 90 degrees.

Concepts:

4. Slide

60 seconds

Angles are also used to describe the shape of a polygon; a polygon with all angles equal is called a regular polygon. The word angle comes from the Latin word 'angulus' which means 'corner'. The sum of the interior angles of a triangle is always 180 degrees.

Did you know?

5. Open question

300 seconds

What is the difference between a line and a line segment?

6. Open question

300 seconds

What is the difference between an acute and obtuse angle?

7. Open question

300 seconds

What did you learn about points, lines, line segments, rays, angles, perpendicular and parallel lines?

8. Open question

300 seconds

Which part of drawing points, lines, line segments, rays, angles (right, acute, and obtuse), and perpendicular and parallel lines was the most challenging?

9. Drawings

450 seconds

Brain break: Draw a watermelon tree with fruits instead of leaves.

10. Drawings

1260 seconds

Question: You and your partner need to figure out how many degrees are in a triangle. How can you do this? Clues: • Remember that the sum of all the angles in a triangle is always 180 degrees. • Look for clues in the triangle's shape. Is it isosceles, equilateral, or scalene? • Try drawing the triangle on paper and labeling each angle. In pairs: Select and solve one of the tasks: A. Create a drawing of the triangle with the angles labeled. B. Create a story problem to explain how you found the angles in the triangle.

11. Poll

60 seconds

What is an angle?

- A figure formed by two rays that share a common endpoint
- A shape with no corners or edges
- A line segment connecting two points

12. Poll

60 seconds

What do you call an angle that measures exactly 90 degrees?

- Right Angle
- Acute Angle
- Obtuse Angle

13. Poll

60 seconds

What do you call an angle that measures between 0 and 90 degrees?

- Acute Angle
- Obtuse Angle
- Right Angle

14. Poll

60 seconds

What do you call an angle that measures between 90 and 180 degrees?

- Obtuse Angle
- Right Angle
- Acute angle

15. Poll

60 seconds

How many degrees are in a straight line?

- 180 Degrees
- 360 Degrees
- 120 Degrees

16. Open question

180 seconds

Work together in pairs: What is the name of the angle that is greater than 90 degrees but less than 180 degrees?

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