# Size of Arc display varies

acron shared this idea 6 years ago

When ever you create and show measure of an angle, you get a very nice arc/sector drawing. There is a big problem though, as you drag the angle into different measures the radius of the arc changes...very, very frustrating...in picture the red arc is the automatic arc, the blue arc is a sector of a circle...I use this as a workaround to get fixed arc radii...it would be nice to be able to fix the radius of the auto arc...

Thank you,

Tony

https://www.geogebra.org/m/1564197

1

BTW, I do know how to create the sectors to emulate what I want, I am asking for a fixed size of the auto sector formed when measuring angles...I usually create a 1 unit circle, find intersections, create sectors, create text for label, and finally force the label to afix to the center of the arc. These steps all take time. Also, one needs to hide the construction.

I would think many would like to see fixed sector sizes when angles measurements important to the lesson.

Tony

1

Tony, if you create the angle using three points I think it remains a constant radius.

Simon

1

Tony, if you create the angle using three points I think it remains a constant radius.

Simon

It stays the same size or the size can be controlled by a slider as long as the points do not need to be moved by dragging. When you move one of the points closer to the vertex it shrinks; moving away from vertex, it goes to a max size. I need it to stay fixed even if one of the creating point is inside the arc. Most of the time my students will be dragging the points. I've had the request in the back of my mind for several years, but right now I am doing a lot of Geometry. Many angles where I want the size of the angle and its captioning being essentially static and readable by the students. I can do this with the workaround, but it takes time.

If the developers could eventually add a check box to fix size near the slider...

Tony

1

Sorry, my mistake. It's when you create the angle between two lines or segments the radius stays constant. :flushed:

Simon