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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: Slide
WiskundeMiddelbare schoolvwoLeerjaar 2

This lesson contains 19 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 50 min

Items in this lesson

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!

Slide 1 - Slide

Make this task in your Notebook.

Slide 2 - Slide

timer
1:30

Slide 3 - Slide

Slide 4 - Slide

This is not possible yet...

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

Slide 5 - Slide


A
BT
B
CT
C
AC
D
AT

Slide 6 - Quiz

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

Slide 7 - Slide

TASK: CALCULATE the HEIGHT  ST  of the pyramid.
Give your answer as a ROOT and then
ROUND it at one decimal.


timer
2:00

Slide 8 - Slide

The height is ...

Slide 9 - Mind map

Slide 10 - Slide

Slide 11 - Slide

§ 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 - Slide

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

Slide 13 - Slide

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 - Slide

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

Slide 15 - Slide

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

Slide 16 - Slide


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

Slide 17 - Quiz

SOLUTION:
timer
0:45

Slide 18 - Slide

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

Slide 19 - Slide

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