Parallellogram & corresponding/alternate angles (t1b)

More angles & parallellograms




March 29th, 2021
t1b
12:25
Cameras ON
1 / 30
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Slide 1: Slide
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This lesson contains 30 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 60 min

Items in this lesson

More angles & parallellograms




March 29th, 2021
t1b
12:25
Cameras ON

Slide 1 - Slide

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 - Slide

Test ch.5-6

Slide 3 - Slide

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 - Slide

Programme

Slide 5 - Slide

Which exercise would you like to see?
23
26
32
33
34

Slide 6 - Poll

Slide 7 - Slide

Slide 8 - Slide

Slide 9 - Slide

Slide 10 - Slide

Slide 11 - Slide

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 - Slide

How would you describe a parallellogram?

Slide 14 - Open question

Parallellograms

Slide 15 - Slide

Parallellograms

Slide 16 - Slide

In parallellogram
PQRS,

Calculate
P1=100°.
R4.
A
R2=80°
B
R2=100°
C
R2=260°
D
R2=280°

Slide 17 - Quiz

Slide 18 - Slide

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 - Slide

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 - Slide

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 - Slide

Find out which other angle
is also 76 degrees like
Use alternate angles (Z-shape).
A1.
A
D1
B
D4
C
C1
D
C2

Slide 22 - Quiz

Find out which other angle
is also 63 degrees like
Use alternate angles (Z-shape).
B1.
A
D1
B
D4
C
C1
D
C2

Slide 23 - Quiz

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 - Slide

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 - Slide

Find out which angle is the
same size as
Use corresponding angles
(F-shape).
A4.
A
D1
B
D4
C
C1
D
C2

Slide 26 - Quiz

Find out which angle is the
same size as
Use corresponding angles
(F-shape).
B2.
A
D1
B
D4
C
C1
D
C2

Slide 27 - Quiz

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 - Slide

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 - Slide