1TH/Vwo §4.2 Distances

§ 4.2 DISTANCES
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Slide 1: Tekstslide
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In deze les zitten 21 slides, met interactieve quiz en tekstslides.

time-iconLesduur is: 50 min

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§ 4.2 DISTANCES

Slide 1 - Tekstslide

I wonder ....
Last lesson you've learned a lot, in § 4.1 LINES.
Do you really KNOW and UNDERSTAND it?
To help you out, let's do a few Activities about § 4.1.

Slide 2 - Tekstslide

ACTIVITY 1:
- get your pencil + geo triangle
- open your Notebook
- make a PAIR of PARALLEL LINES

Slide 3 - Tekstslide

ACTIVITY 2:
- get your pencil + geo triangle
- make a PAIR of PERPENDICULAR LINES

Slide 4 - Tekstslide

Let's have a close look at a more difficult exercise.
Answer question 7a in the next slide.
Choose one pair of parallel sides.
timer
0:20

Slide 5 - Tekstslide

Which sides are PARALLEL ?
A
PQ and PT
B
PQ and ST
C
PT and QR
D
PT and RS

Slide 6 - Quizvraag

Think hard about 7b now!
Someone will get the turn do try 7b on the metal white board.
Your teacher will copy the picture there.

Slide 7 - Tekstslide

Think hard about 7c now!
Someone will get the turn do try 7c on the metal white board.
Your teacher will copy the picture there.

Slide 8 - Tekstslide

Think hard about 7d now!
Someone will get the turn do try 7d on the metal white board.
Your teacher will copy the picture there.



Finally: next slide shows you all the answers together in one picture!



Slide 9 - Tekstslide

Solutions:

Slide 10 - Tekstslide

This was a RECAP of § 4.1 
Now about § 4.2 !
We are going to MEASURE DISTANCES
An Introduction follows now!

Slide 11 - Tekstslide


Here we see Leanne sailing.
What is the SHORTEST DISTANCE for her to sail to the coast?
Think about this and 
Compare your answer to your neighbor's. 
timer
0:30

Slide 12 - Tekstslide

Distances
- You will see how to measure the DISTANCE from a POINT and a LINE.

- You will see how to measure the DISTANCE from a LINE to another LINE .

- NOTE: you don't have to understand or know all of it right away,
   however watching the following slides carefully will certainly help you
   when doing § 4.2 Distances, later!

Slide 13 - Tekstslide

Slide 14 - Tekstslide

Practice this yourself, now! (1)
- Take your GEO tringle and a pencil in your hand.
- Open your Notebook.
- Draw a straight line n and a point R.
- Place your GEO as in the THEORY above and
- Draw a line segment from the Line to the Point.
- Measure the distance from Line to Point and 
- Write this in your Notebook.

Slide 15 - Tekstslide

Slide 16 - Tekstslide

Practice this now (2):
- Draw two Parallel Lines, as you learned in §4.1.
- Choose the Distance between both lines yourself.
- Measure the Distance between the two lines and
- Write this down, next to your drawing.

Slide 17 - Tekstslide

Homework time
Later a few more slides follow, about the last exercises.

timer
10:00

Slide 18 - Tekstslide

For today I asked you to bring a PAIR OF COMPASSES.
Show me your COMPASSES now!


Slide 19 - Tekstslide

Slide 20 - Tekstslide

Homework time
Make sure you have little homework !

Slide 21 - Tekstslide