Ch5 measuring angles

• Wiskunde
• Middelbare school
• havo
• Leerjaar 1

Grab your stuff

You have on your table:

- Your grid math notebook

- the worksheet

- A pen to write with

- protractor triangle

Welcome

Today's goal is...

To measure angles with a protractor triangle

Let's recall...

What types of angles do we know already? 

do we remember the dutch words ?

How to measure? 

1.  Grab your protractor
2. Place the 0 baseline in the vertex
3. Check if the protractor base aligns with a ray 
4. Think: acute or obtuse?
5. Read the degree intersecting the other ray
6. Write ∠ A = ......

Let's do some exercises

What?	do exercises 2, 5, 7
Where?	on the worksheet
How?	-Whisper and draw on the worksheet -Use pencil and protractor triangle
Time?
Help?	-See blue and orange boxes -Raise your hand
Not done?	Then it will be homework
Done?	do exercise 8

Tip 1	Make the rays longer
Tip 2	Full angle is 360 degrees
Tip 3	Write ∠ A = ......

1.  Grab your protractor
2. Place the 0 baseline in the vertex
3. Check if the protractor base aligns with a ray 
4. Think: acute or obtuse?
5. Read the degree intersecting the other ray
6. Write ∠ A = ......

grab your planner

Homework from the worksheet
exercise 2, 5, 7

SO Chapter 5 Angles  (1x)   28 March 2023

Lesson wrap up

What did we learn today?