5.3 AB area triangle

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 2

How are you doing today?

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Learning goals

You understand what the words base and height mean in a triangle.

You are able to calculate the area of a triangle.

05:06

What is its area?

1. 7m​2​​
2. 14m​2​​
3. 12m​2​​
4. 12m

06:34

Why don't we use length and width for triangles? Tokens for correct, full sentences.

07:33

The height of a triangle is always .... to its base.

1. parellel
2. perpendicular
3. opposite
4. vertex

07:49

In a ... triangle, the height can be outside the triangle.

1. obtuse
2. acute
3. right
4. isosceles

09:24

What is the area of this triangle with base 4 inch and height 7 inch?

00:51

Is the height for base EF going to be inside the triangle?

1. yes
2. no

01:27

Note how the base doesn't increase in length when you extend a line from the base.

The homework for next class is:
Chapter 5: assignments 46,47,48,49,50,51

Write this in your Plenda now.

Get started on the homework.

Write your answers in your notebook.

Write using a pen, draw using a pencil.

Done early? Explore & Investigate!