# 1TH/Vwo §4.3 Right, acute, obtuse and straight

§4.3 Right, acute, obtuse and straight
First we look back shortly at §4.2 Distances.
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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

This lesson contains 13 slides, with text slides.

Lesson duration is: 50 min

## Items in this lesson

§4.3 Right, acute, obtuse and straight
First we look back shortly at §4.2 Distances.

#### Slide 3 -Slide

Finally the making of a circle:
a wonderful example of using 'distances'!

#### Slide 5 -Slide

Only now:
§4.3 Right, acute, obtuse and straight angles !
What better way to Introduce all these new words and their meaning than watching an Englishman explaining it!?
(Only the first 3.14 minutes are important for us, now.)

#### Slide 7 -Slide

The next 2 slides ...
summarise all the previous information!

#### Slide 11 -Slide

For VWO and H/V classes.
+ Did you score high for the first tests?
Then you are invited to try the Challenge path,
doing       C4 and C5 on p.135 ! (Of course everybody may try!)
+ However, C4 is a real challenge, especially C4b. This is about calculating
precisely. The Solutionsbook does not make it much easier, I think. (All the
more as it contains a mistake.)
So this is a REAL CHALLENGE!

#### Slide 12 -Slide

Homework time
+  Make §4.3
+ Correct your work with the Solutionsbook
+ Take a few pics and
+ Send them in on Google Classroom
+ Good luck!
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