# 2TTO §6.6 Mixed exercises

§6.6 Mixed exercises
This § gives you good material to practice all you learned in Ch 6 once more.

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Slide 1: Tekstslide
WiskundeMiddelbare schoolvwoLeerjaar 2

In deze les zitten 25 slides, met interactieve quizzen en tekstslides.

Lesduur is: 50 min

## Onderdelen in deze les

§6.6 Mixed exercises
This § gives you good material to practice all you learned in Ch 6 once more.

#### Slide 1 -Tekstslide

INTRODUCTION
let's go through some of the exercises together!

#### Slide 2 -Tekstslide

Drawing or sketching is something ...
+   that everybody can do
+  helps you making your homework
+ read in the next slide how to do this!

#### Slide 3 -Tekstslide

• Write down '38' in the margin of your Notebook.
•  Make a sketch in your Notebook, to work out the longest paper chain.
• So draw a right-angled triangle, including all the given measurements.

Solution 1:

#### Slide 5 -Tekstslide

Save some space for the Calculation of 38 (!)
Write '39' in the margin.
Make a sketch to work out the length of the straw.
Include all you know.
Make sure you can apply Pythagoras in it!

Solution 2:

#### Slide 7 -Tekstslide

Save some space for the Calculation of 39.
Write down '40' in the margin.
Sketch the route of the stunt rider: only a Right-angled triangle!

Solution 3:

#### Slide 9 -Tekstslide

Preparing 41 together.
This text of this exercise consists of only 4 lines and is about a pyramid.
Pretty abstract, isn't it?!  We will make it more concrete!
In a few steps we will:
+  calculate
+ sketch and then again:
+ calculate what is needed, to find : THE HEIGHT of the PYRAMID !

#### Slide 11 -Tekstslide

What could be a good first step?

#### Slide 12 -Woordweb

STEP 1:
Calculate the length of the slanted edges:
1m = 100 cm.
100 - 4 x 10 = 100 - 40 = 60
60 : 4 = 15 cm

#### Slide 13 -Tekstslide

Because the book
does not give it, I present you
with a sketch in 3D.
Watch the capital letters  and the lengths!

#### Slide 15 -Tekstslide

Sketch the triangle in which you can calculate
the HEIGHT of the Pyramid.
For this we will go back to the previous slide!

Solution 4:

#### Slide 17 -Tekstslide

What is the next logical step?

#### Slide 18 -Woordweb

Solution previous question:
Calculate the length of BV,
in base ABCD, with
the theorem of Pythagoras.
See next slide!

#### Slide 20 -Tekstslide

Next this sketch is needed:

#### Slide 21 -Tekstslide

Finally...
Calculate the height VT !

#### Slide 22 -Tekstslide

Homework time!
Make in Workbook:
Practice tst 1,2,5 & 8.
Also check and correct them

#### Slide 23 -Tekstslide

§6.6 Mixed exercises