Question

How do you draw GHI with G=80,GH=9CM and H=35?

Answer 1

I use https://www.geogebra.org/classic#geometry

Explanation:

Let's do what we'd do with a protractor with Geogebra.

On the left are descriptions of the objects Geogebra made as I clicked around creating this.

I started with with File/New on the top right menu (not shown).

Then I clicked the line icon, then create a line segment. It told me to click two points, I clicked to create A and B and the segment between them.

Then I licked on the angle icon, and the `angle a` choice. I clicked on B, clicked on A and a box popped up and I typed `80^\circ`.

I then clicked on A then B and typed in the angle `35^circ`. That didn't work like I wanted; I hit undo, did it again and entered `-35^circ`. That worked. It is recorded as `325^circ` in the descriptions.

Then I created the lines at each of the two angles using some points it had popped up, and clicked on the intersection.

A few right clicks to turn off "Show Object" made some auxiliary points disappear.

That's it.