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Special Triangles (year 1)
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Slide 1:
Slide
Wiskunde
Middelbare school
vwo
Leerjaar 1
This lesson contains
13 slides
, with
interactive quizzes
,
text slides
and
1 video
.
Lesson duration is:
50 min
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Items in this lesson
Slide 1 - Slide
8
Slide 2 - Video
00:59
Which types of angles do you know? Write down as many as you know.
Slide 3 - Open question
02:45
How many axes of symmetry does an equilateral triangle have?
A
0 axes of symmetry
B
1 axis of symmetry
C
2 axes of symmetry
D
3 axes of symmetry
Slide 4 - Quiz
03:13
How may axes of symmetry does an isosceles triangle have?
A
0 axes of symmetry
B
1 axis of symmetry
C
2 axes of symmetry
D
3 axes of symmetry
Slide 5 - Quiz
04:20
Copy the table from the screen into your notebook.
Give this table a title: Types of triangles.
Slide 6 - Slide
04:24
Draw examples of an scalene acute triangle and an scalene obtuse triangle
into the table in your notebook.
Remember: in a scalene triangle
the lengths of all the edges in the triangle are different.
Slide 7 - Slide
04:38
Draw examples of an isoscles right-angled triangle into the table in your notebook.
Slide 8 - Slide
04:52
Why is an equilateral triangle always an acute triangle?
Slide 9 - Open question
05:08
Complete your table about
Types of triangles
Slide 10 - Slide
Slide 11 - Slide
Slide 12 - Slide
Agenda
What we're doing today:
Special triangles
Isosceles triangles
equilateral traingles
right-angled triangles
Theory 9.3A
Slide 13 - Slide
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