## Remarkable points and straight lines in a triangle

Watch this presentation about the remarkable points and straight lines in a triangle, and then watch the tutorials.

You have to see them in this order:

1)Circumcenter

2) Incenter

3) Barycenter

In the three remaining boxes you have to do:

1. Draw a scalene triangle with free measures and trace its circumcenter.
2. Draw a right triangle with free measures and trace its incenter
3. Draw an equilateral triangle with free measures and trace its barycenter.

## Triangles 2º

We are going to build triangles from some information about their shape. First of all, do a margin on your sheet and divide it into 6 equal parts 0.

Dividing a sheet into 6 equal parts (optional)

Before starting, you have to see the presentation about the triangles and then see the 3 tutorials in this order:

1. Triangles 1: Contruction of a triangle knowing 2 sides and one angle

2. Triangles 2: Contruction of a triangle knowing 2 angles and one side

3. Triangles 3: Contruction of a triangle knowing 3 sides

You have to do these 3 activities:

1. Draw one triangle knowing 2 sides and one angle: AB=8cm; AC=6,5cm and A=30º

2. Draw one triangle knowing 2 angles and one side: AB=7cm; A=30º and B=60º

3. Draw one triangle knowing 3 sides and one angle: AB=7,5cm; AC=4cm and BC=7cm