1TH/Vwo §4.1 Lines

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 1

§4.1 LINES

This lesson you will learn about ...

+  parallel lines,

+  perpendicular lines (?!),

+  quadrilaterals (?!) and

+  diagonals.                     However first:  parallel lines!             

§4.1 Lines

Please take out of your bag:

- pencil

- geo triangle

- and the usual stuff like Notebook and Textbook, of course!

How to DRAW PARALLEL LINES ?

see next slide

Why this warning?!

Because you're going to this right now, in class!!

DRAW  two PARALLEL LINES in your Notebook,

with your

PENCIL + GEO TRIANGLE.  

Use the METHOD above!

next is ...

PERPENDICULAR LINES,

meaning: two lines that make RIGHT ANGLES.

How to pronounce?!

Watch next slides.

All together now!

''perpendicular''

But ... how to DRAW PERPENDICULAR LINES ?

see next slide

Try this yourself now:

DRAW two PERPENDICULAR LINES

in your Notebook. Use the METHOD above!

Homework time

It's high time to do 

§4.1 now.

Later this Lessonup is continued.

Let's continue the WORDLIST.

Write down in your Notebook:

 parallel - evenwijdig                                        rectangle - rechthoek

 perpendicular - loodrecht                             diagonals - diagonalen

 quadrilateral - vierhoek                                   hexagon - zeshoek

You've seen ...

+   parallel lines and perpendicular lines

+   next slide shows you:  some QUADRILATERALS

+   don't you believe it?

+   just watch the next slide and be amazed!

By the way ...

Is it important to really KNOW all new words and meaning right now?

Not really. 

The important thing is that you now go through the content of § 4.1

by this LessonUp.

This makes it easier to work your way through it by yourself!

Next you'll see:

DIAGONALS!

On the Chess board!

Homework time

Good luck, doing §4.1, p.124 - 127!

One IMPORTANT thing:

 Use a PENCIL and a GEO for the drawings!

REMINDER: next lesson bring your PAIR of COMPASSES too (for drawing CIRCLES)!!