In deze les zitten 11 slides, met interactieve quizzen en tekstslides.
Onderdelen in deze les
Slide 1 - Tekstslide
What is the name of the red shape shown before?
A
Rectangle
B
Triangle
C
Circle
D
Pentagon
Slide 2 - Quizvraag
2D-shapes
Shapes have vertices (shown as the blue dots in the figure) and Shapes have sides (the line segments between the vertices)
Slide 3 - Tekstslide
2D-shapes
A 2D-shape with 3 vertices and 3 sides is called a triangle. On the right you see triangle ABC, named after the vertices A, B and C.
Slide 4 - Tekstslide
2D-shapes
If a 2D-shape has 4 vertices and 4 sides, we call it a quadrilateral. The most known quadrilateral is the square. But there are many others, as you will learn soon!
Slide 5 - Tekstslide
All shapes above are quadrilaterals
Slide 6 - Tekstslide
Quadrilaterals
We are going to categorize the quadrilaterals based on the following properties:
Parallel sides
angles
length of sides
Tekst
Slide 7 - Tekstslide
Trapezium
The first special quadrilateral is the trapezium. It has 1 pair of parallel sides. As indicated by the red sides in the figures.