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

What you will need in every lesson from Ch 5:

- pencil

- geo triangle

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

- so bring it all, for good use!

How to DRAW PARALLEL LINES ?

see next slide

next is ...

PERPENDICULAR LINES,

meaning: two lines that make RIGHT ANGLES.

How to pronounce?!

Watch next slides.

But ... how to DRAW PERPENDICULAR LINES ?

see next slide

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!

The dutch word for 'quadrilateral' is
....

1. driehoek
2. rechthoek
3. vierkant
4. vierhoek

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 are ...

DIAGONALS!

First in Math figures, then

on the Chess board!

There is a spelling mistake in the next slide.

Maybe you notice it!?

Let's continue the WORDLIST.

Write down at the back of your Notebook:

- parallel                                         -  rectangle

- perpendicular                           -  diagonals

- quadrilateral                              - hexagon 

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)!!