This project, the technology was applied in the drawing tripod between the project board. Which brought together seamlessly. Easy to write because of the added space to write out one of the three boards. There is a pen holder and stand for stable boards.
Theory
Isosceles triangle has two sides of equal length sides. Isosceles triangle are two angles and angles are the same size.
Rectangle is rectangular with the corners
every angle is an angle.
The properties.
1. opposite sides of equal length.
2. have a 90 degree angle, every corner stretch.
3. the diagonals of equal length.
But not perpendicular to each other.
4. diagonal half-breaks together.