# Right angle representation

ilic.ferretti shared this question 4 years ago

I need to underline that two segments are orthogonal, so I would like to show that the angle they form measures 90° degree. I created the angle and it showed up fine as a small square (see first attached image).

At a certain point, however, the representation of the angle changed and appeared as a round angle with a point inside it (see second attached image). I suppose this point is meant to indicate that the angle is exactly 90°, however this notation is not common for my students, and I would like to have my "square" angle back.

Is it possible somehow? I wasn't able to find the way to get it

Ilic 1

hello

I do not know what point or points you move. I did two different method depending if the point can be modified a little bit with a script or not. in first case the point is captured for 90º, in the second a fake angle gamma is showed

saludos 1

Hi,

the points are not moved (there are some points which are moved, but the angle does not get modified). In any case, the SAME applet showed a certain type of angle until a given moment, and then (apparently without any significant change... but obviously I could have missed it) switched to the other representation.

My impression is that the "square" angle was replaced by the "round" one when I opened the ggb with a different version of GeoGebra... is it possible?

Here is the link to the page with the applet

Thank you 1

You can even use conditional visibility to show what ever you want in a special case. For example that angles have a special size. 1

Sorry but this is not the question. The angle IS of 90°, and it keeps being of 90°. The problem is that the SAME angle of 90° is shown in two different ways (see my first post), and I am not able to choose the representation I prefer.

As you can see in the picture, the angle IS of 90°, and I even enabled the checkbox to underline this fact: Originally this made the angle appear square, but then it started simply having a small point inside it (as you can see, alpha angle has identical appearance save that it has no small point inside).  1

now I understand  1

Yessss!!! Thank you SO much!!!

Ilic