# 2Tvwo Ch 6 SUMMARY, p.222-225

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!
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Slide 1: Tekstslide
WiskundeMiddelbare schoolvwoLeerjaar 2

In deze les zitten 19 slides, met interactieve quizzen en tekstslides.

Lesduur is: 50 min

## Onderdelen in deze les

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!

timer
1:30

#### Slide 4 -Tekstslide

This is not possible yet...

Question:
In order to calculate the HEIGHT,
which length do we have to
calculate FIRST?
ANS

A
BT
B
CT
C
AC
D
AT

#### Slide 6 -Quizvraag

This is not possible yet...
First we calculate AC in triangle ABC and then AS!  As follows:

#### Slide 7 -Tekstslide

TASK: CALCULATE the HEIGHT  ST  of the pyramid.
ROUND it at one decimal.

timer
2:00

#### Slide 8 -Tekstslide

The height is ...

#### Slide 11 -Tekstslide

§ 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!

#### Slide 12 -Tekstslide

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

#### Slide 13 -Tekstslide

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!
timer
0:30

#### Slide 14 -Tekstslide

1.  KL is the longest side.
2. Because 12 = root 144, which is greater than KM, which is
root 67.

#### Slide 15 -Tekstslide

The sketch:
Find out wether the triangle is right-angled,
acute-angled or obtuse-angled.
ANS
timer
0:45

A
obtuse-angled
B
acute-angled
C
right-angled

SOLUTION:
timer
0:45

#### Slide 18 -Tekstslide

Homework time!
Make SUMMARY p.222-225 now!