# TRIANGLES

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:

https://youtu.be/vntBHBksIF4

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.

This is my musical recommendation for this week, Patrick Watson:

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

Finally take a picture of the page and send it to me. Please, take a look to the instruction and take a photo just of the sheet. LA BIEN QUERIDA is my musical recommendation for today.