Add exercise: Solving Similar Triangles 1
Answer choices properly code tagged.
Merge pull request #11488 from mrhwick/master

Solid geometry - Units Matter! Fixed
fix #9058
Merge and squash pull request #11821 from wkvong/fix-decimals-to-fractions-2

Closes #11821
fix #9613

commit e809b17ae9ad8b6cfb2d414cc56168d1a2de9cec
Author: Wai Keen Vong <waikeenvong@gmail.com>
Date:   Sun Jan 22 21:59:35 2012 +1030

    Fixed spaces to tabs

commit 0a9e43e6c193e2541143fd02ee059c0cf21a98a9
Author: Wai Keen Vong <waikeenvong@gmail.com>
Date:   Sun Jan 22 21:31:31 2012 +1030

    Changed code so answers for both problem types are required to be in simplified fraction form
Add exercise: Solving similar triangles (summative review). In solving similar triangles 1, ensure triangle sizes are rarely equal.
Fixing multitude of bug reports on both/none answer types broken.
Restore code tags for answer choices
whitespace
Merge pull request #11398 from mnehring/trig_rationalize

Update utils/convert-values.js to fix #9969 (Trig identities 1 - Wrong answer...)
Merge pull request #11419 from jklange/issue10092

Clarified the value of a penny by adding the phrase ", which is 1/100 of...
fix #10092
Remove unused var that was throwing errors
whitespace
Fix hint to refer to exterior angles
Merge pull request #13858 from clkirby1/altext2

fix #13860
add exercise discount-tax-tip word problems, took out the tip problem type from percentage word problems 1
Fix for issue #13876
fixed problems in the discount tax tip exercise
Add exercises: Trig [0.5|1.5] to enable exploration of Trig w/o radicals
Merge branch 'master' of https://github.com/Khan/khan-exercises
Fix for issue #14183