2TTO §8.2 Parallelograms 21-22 PTI

Recap: Area triangle


Calculate the area of triangle ABC.
Write down your calculation and 
take a picture/screenshot
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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 2

This lesson contains 10 slides, with interactive quiz and text slides.

time-iconLesson duration is: 50 min

Items in this lesson

Recap: Area triangle


Calculate the area of triangle ABC.
Write down your calculation and 
take a picture/screenshot

Slide 1 - Slide

Calculate the area of triangle ABC

Slide 2 - Open question

Recap: Area triangle

Slide 3 - Slide

Parallelograms: 
A parallelogram is a quadrilateral (figure with four sides) where the opposite sides have the same length and are parallel and the opposite angles are equal.


Slide 4 - Slide

Area parallelogram
A triangle can be cut off of a parallelogram and then moved to the other side, to turn the parallelogram into a rectangle.

Slide 5 - Slide

Area parallelogram


Or shorter: 

Slide 6 - Slide

Base and height
The base of a parallelogram is, like with a triangle, one side of the figure. The corresponding height is perpendicular to the base to the opposite side. The height can be outside the parallelogram.

Slide 7 - Slide

Base and height
The base of a parallelogram is, like with a triangle, one side of the figure. The corresponding height is perpendicular to the base to the opposite side. The height can be outside the parallelogram.

Slide 8 - Slide

Slide 9 - Slide

Time to do HW 
Make and correct §8.2:
8, 10, 11, 12 and choose OR S10 or 13.
Also check it!

Slide 10 - Slide