# Shapes

Shapes
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Slide 1: Slide
WiskundeMiddelbare schoolvwoLeerjaar 1

This lesson contains 32 slides, with interactive quizzes, text slides and 1 video.

Lesson duration is: 45 min

## Items in this lesson

Shapes

#### Slide 1 -Slide

The shapes on the first slide have a name.
Do you know them?

triangle
circle
square
rectangle

#### Slide 3 -Drag question

How could you tell these shapes apart?

#### Slide 4 -Open question

Properties
The numbers of angles, the length of the sides (compared to each other), the size of the angles.......
These are called the properties of a shape.
The colour and how big they are, are NOT properties in maths.

#### Slide 5 -Slide

Let us do a quizz

You will get a description and you write what shape it is.

#### Slide 6 -Slide

What am I?
I have 4 sides, I have 4 angles, I have two shortes sides and two longer sides.

#### Slide 7 -Open question

What am I?
All my sides are equally as long (= even lang), I have three angles and three sides.

#### Slide 8 -Open question

What am I?
I have 1 curved side.
I have no angles

#### Slide 9 -Open question

What am I?
I have 4 angles and 4 sides.
All sides have the same length.

#### Slide 10 -Open question

What am I?
I have 4 angles and 4 sides.
All sides have the same length.
We answered a square to the question above.
But does the description also go with the shapes on the right?

#### Slide 11 -Slide

More properties and names
rhombus
parallelogram
diagonals
kite
trapezium
Isosceles
equilateral
scalene
regular
irregular
polygons
pentagon
parallel
perpendicular
angle
right
hexagon
octagon

#### Slide 13 -Video

Triangles
Isosceles: two sides the same

Equilateral: all sides the same

Right- angle: with an angle of 90 degrees
Scalene: nothing special

#### Slide 14 -Slide

What kind of triangle is this?
A
Scalene
B
Right-angle
C
Isosceles
D
Equilateral

#### Slide 15 -Quiz

What kind of triangle is this?
A
Scalene
B
Right-angle
C
Isosceles
D
Equilateral

#### Slide 16 -Quiz

What kind of triangle is this?
A
Scalene
B
Right-angle
C
Isosceles
D
Equilateral

#### Slide 17 -Quiz

What kind of triangle is this?
A
Scalene
B
Right-angle
C
Isosceles
D
Equilateral

#### Slide 18 -Quiz

What kind of triangle is this?
A
Scalene
B
Right-angle
C
Isosceles
D
Equilateral

#### Slide 19 -Quiz

What kind of triangle is this?
A
Scalene
B
Right-angle
C
Isosceles
D
Equilateral

#### Slide 20 -Quiz

names
1. square
2. rhombus
3. rectangle
4. trapezium (UK)  trapazoid (US)
5. parallellogram
1.
2.
3.
4.
5.
6.

#### Slide 21 -Slide

Look at the picture. How many quadrilaterals do you see?

#### Slide 22 -Slide

How many quadrilaterals did you see?

#### Slide 23 -Open question

Look at the picture. How many squares do you see?

#### Slide 24 -Slide

how many squares did you see

#### Slide 25 -Open question

Look at the picture. How many trapeziums do you see?

#### Slide 26 -Slide

how many trapeziums do you see?

#### Slide 27 -Open question

• Diagonals are lines inside the figure.
• They can be perpendicular to each other.
• Cut each other in half (bisect)
• They can be equally as long or of different sizes.

#### Slide 28 -Slide

• Sides can be equal or equal in pairs.
• They can be perpendicular to each other (90 degrees) or parallel (train rails)
• Angles can be right (90 degrees)
• Opposite angles can be the same or different.
• The angle can be cut each in half (bisect) by the diagonal

#### Slide 29 -Slide

Fill in the correct word.

The opposite sides of a trapezium are .......

A
the same length
B
perpendicular (90 degrees)
C
parallel (train rails)
D
diagonal

#### Slide 30 -Quiz

Think about a rectangle and drag the right word to the right place.
One of the targets is used twice.
Opposite sides are
All angles are
The diagonals are
The diagonals ....... each other
right
bisect
parallel
equal

#### Slide 31 -Drag question

Fill in the correct words
In a kite the diagonals are ....(1)... and
one pair of opposite ....(2)... are the same
A
1=parallel 2=sides
B
1= parallel 2= angles
C
1= perpendicular 2=sides
D
1= perpendicular 2= angles