# Khan/khan-exercises

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# angle-bisector-theorem: replace numeric with symbolic angle#44904

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merged 1 commit into from
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### 3 participants

Due to rounding errors when converting to niceAngles,
the numeric value displayed can lead to invalid
triangles. i.e. an SSA triangle with side, side, angle
values that produces a triangle that does not exist.

This change is to just replace the numeric rounded value
displayed with a theta character to show that the angles
are equal and that the bisector theorem can be used.

 awmorgan Replace numeric degrees with symbolic label: Due to rounding errors when converting to niceAngles, the numeric value displayed can lead to invalid triangles. i.e. an SSA triangle with side, side, angle values that produces a triangle that does not exist. This change is to just replace the numeric rounded value displayed with a theta character to show that the angles are equal and that the bisector theorem can be used. 26d8712
referenced this pull request
Closed

### Angle bisector theorem - Answer is wrong #44799

I like this solution. The only possible concern would be the use of the Greek letter with students that may not be used to seeing Greek letters in a problem. I have come across a number of students in the comments who are confused by the funny letters.

How about using symbols to show that the two angles are equal? (two matching arcs with a single line)

merged commit 2829724 into Khan:master
Commits on Apr 22, 2013
1. awmorgan authored
Due to rounding errors when converting to niceAngles,
the numeric value displayed can lead to invalid
triangles. i.e. an SSA triangle with side, side, angle
values that produces a triangle that does not exist.

This change is to just replace the numeric rounded value
displayed with a theta character to show that the angles
are equal and that the bisector theorem can be used.