2Tvwo Ch 6 SUMMARY, p.222-225

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 2

Ch 6 SUMMARY, p.222-225

= Homework , but...

first we have a good look at a few important exercises:

+ E7  and 

+ E8 b

Both are important for the coming 4 test!

Make this task in your Notebook.

This is not possible yet...

Question:

In order to calculate the HEIGHT,

which length do we have to

calculate FIRST?

ANS

1. BT
2. CT
3. AC
4. AT

This is not possible yet...

First we calculate AC in triangle ABC and then AS!  As follows:

TASK: CALCULATE the HEIGHT  ST  of the pyramid.

Give your answer as a ROOT and then

ROUND it at one decimal.

The height is ...

§ 6.5 was about finding out if a triangle was:

a. right-angled

b. acute-angled or                     c. obtuse-angled.

The coming exercise, E8b, is an illustration of this!

First of all: what do these names of triangles mean?!

Watch below:

Can you really? If not, watch these slides!

 First we make a sketch! For this we need to know more!

Question 1:        Which side is the longest? 

Question 2:       Why?

Think about it for half a minute!

Answers:

1.  KL is the longest side.

2. Because 12 = root 144, which is greater than KM, which is 

    root 67.   

The sketch:

TASK:

Find out wether the triangle is right-angled,

acute-angled or obtuse-angled.

ANS

1. obtuse-angled
2. acute-angled
3. right-angled

SOLUTION:

Homework time!

Make SUMMARY p.222-225 now!