Links
[1] https://hootsgo.org/?q=node/6290
[2] http://www.regentsprep.org/regents/math/geometry/GC1/indexGC1.htm
[3] http://www.regentsprep.org/regents/math/geometry/GC3/indexGC3.htm
[4] http://www.regentsprep.org/regents/math/geometry/MultipleChoiceReviewG/Constructions.htm