#Grade6C: Constructing Figures- Lesson 1

We are learning to: use a protractor, a ruler, and a compass to construct figures.

I know:

- figures can be combined to create other figures

- a figure can be created using different materials (compass, protractor, ruler) if I am given the lengths of its sides and the measures of its angles

“Construction” in Geometry means to draw shapes, angles, or lines accurately. These use a compass, ruler, protractor, and pencil. One way to construct a 2-D figure is to use a ruler and a compass or a protractor. The websites below will give you an introduction. Try along with the videos. I will provide a full lesson tomorrow.

Animations:

http://www.mathsisfun.com/geometry/constructions.html

http://www.mathsisfun.com/geometry/construct-30degree.html

http://www.mathsisfun.com/geometry/construct-equitriangle.html

http://www.mathsisfun.com/geometry/construct-ruler-compass-1.html

http://www.mathopenref.com/consttriangleasa.html

http://www.mathopenref.com/consttrianglesss.html

http://www.mathopenref.com/consttrianglesas.html

Slideshare:

http://www.slideshare.net/adamharbott/constructing-an-angle-or-triangle-using-a-protractor

Angles videos:

http://www.youtube.com/watch?v=SykwnXDs1tE