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Parallellogram & corresponding/alternate angles (t1b)
More angles & parallellograms
March 29th, 2021
t1b
12:25
Cameras ON
1 / 30
volgende
Slide 1:
Tekstslide
Wiskunde
Middelbare school
vwo
Leerjaar 1
In deze les zitten
30 slides
, met
interactieve quizzen
en
tekstslides
.
Lesduur is:
60 min
Start les
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Onderdelen in deze les
More angles & parallellograms
March 29th, 2021
t1b
12:25
Cameras ON
Slide 1 - Tekstslide
Schedule
Programme
5 min
Test ch.5-6 answers
15 min
Review: homework (choice) 10 min
Parallellograms
Corresponding/alternate angles
15 min
Practice exercise
15 min
Discuss exercise
Slide 2 - Tekstslide
Test ch.5-6
Slide 3 - Tekstslide
Choice
Take a look at the homework in your notebook
Think about which exercise you would like to see answered correctly
Make a choice when the poll comes up
Options:
23, 26, 32, 33 or 34
Slide 4 - Tekstslide
Programme
Slide 5 - Tekstslide
Which exercise would you like to see?
23
26
32
33
34
Slide 6 - Poll
Slide 7 - Tekstslide
Slide 8 - Tekstslide
Slide 9 - Tekstslide
Slide 10 - Tekstslide
Slide 11 - Tekstslide
What are your thoughts now about this exercise?
I still don't really understand it
I understand the explanation, but I'm not sure I can do this kind of exercise on my own
I understand and I think I can do this kind of exercise on my own
Slide 12 - Poll
Today's
Intended Learning Outcomes
At the end of the lesson you can...
Use the properties of
parallellograms
to do calculations with angles
Recognize
corresponding
and
alternate
angles and use them to calculate angles
Slide 13 - Tekstslide
How would you describe a parallellogram?
Slide 14 - Open vraag
Parallellograms
Slide 15 - Tekstslide
Parallellograms
Slide 16 - Tekstslide
In parallellogram
PQRS,
Calculate
∠
P
1
=
1
0
0
°
.
∠
R
4
.
A
∠
R
2
=
8
0
°
B
∠
R
2
=
1
0
0
°
C
∠
R
2
=
2
6
0
°
D
∠
R
2
=
2
8
0
°
Slide 17 - Quizvraag
Slide 18 - Tekstslide
Alternate angles (Z-shape)
If you have two parallel lines, and a line between them,
"The elbow crooks in a Z-shape are the same"
Slide 19 - Tekstslide
Alternate angles (Z-shape)
If you have two parallel lines, and a line between them,
"The elbow crooks in a Z-shape are the same"
Slide 20 - Tekstslide
Alternate angles (Z-shape)
If you have two parallel lines, and a line between them,
"The elbow crooks in a Z-shape are the same"
Slide 21 - Tekstslide
Find out which other angle
is also 76 degrees like
Use alternate angles (Z-shape).
∠
A
1
.
A
∠
D
1
B
∠
D
4
C
∠
C
1
D
∠
C
2
Slide 22 - Quizvraag
Find out which other angle
is also 63 degrees like
Use alternate angles (Z-shape).
∠
B
1
.
A
∠
D
1
B
∠
D
4
C
∠
C
1
D
∠
C
2
Slide 23 - Quizvraag
Corresponding angles (F-shape)
If you have two parallel lines, and a line between them,
"The elbow crooks in an F-shape are also the same"
Slide 24 - Tekstslide
Corresponding angles (F-shape)
If you have two parallel lines, and a line between them,
"The elbow crooks in an F-shape are also the same"
Slide 25 - Tekstslide
Find out which angle is the
same size as
Use corresponding angles
(F-shape).
∠
A
4
.
A
∠
D
1
B
∠
D
4
C
∠
C
1
D
∠
C
2
Slide 26 - Quizvraag
Find out which angle is the
same size as
Use corresponding angles
(F-shape).
∠
B
2
.
A
∠
D
1
B
∠
D
4
C
∠
C
1
D
∠
C
2
Slide 27 - Quizvraag
Practice
Chapter 7:
Do
39 and 41 (parallellograms)
Do
53 and
54
(alternate angles)
Do
56 and
58
(corresponding angles)
Do
59 and 61 (mix)
Do
63 ór 65 (choice)
How to write down your calculations neatly
Don't just start writing; look at the steps you want to take
Find out where you should start: use the given information
Write down calculations AND the rule you used each time (in brackets behind it)
Go on until you reach the angle that was requested
Slide 28 - Tekstslide
What did you think of this lesson?
There was too much explaining and not enough practice
The mix between explaining and practice was fine
I have another opinion that I would like to share
Slide 29 - Poll
Slide 30 - Tekstslide
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