You already know that we can classify the triangles acording to their angles and acording to their side lengths. Read this link if you want to know more.

### Activity

- Open geogebra and draw in the same canvas the following triangles:
- Equilateral triangle
- Isosceles triangle
- Scalene triangle
- Save the .ggb file
- Open another geogebra file and try to draw the following triangles:
- Acute triangle
- Obtuse triangle
- Right triangle
- Save the .ggb file
- Questions:
- Draw here a short definition for each kind of triangle according to their side lengths.
- In the second file, use then the angle utility of geogebra and measure each angle. How much is the sum of the 3 angles of a triangle?
- Send an email to the teacher with the two .ggb files attached and the answer to the questions.

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