To classifythe triangleby side lengths,you haveto examinethe relationshipsbetweenthe sides.Two of
the sidesin this triangleare congruent,so it is an isoscelestriangle.The correctansweris B.
LessonSummary
In this lesson,we exploredtrianglesand their classifications.Specifically, we havelearned:
- How to definetriangles.
- How to classifytrianglesas acute,right,obtuse,or equiangular.
- How to classifytrianglesas scalene,isosceles,or equilateral.
Thesetermsor conceptsare importantin manydifferenttypesof geometricpractice.It is importantto have
theseconceptssolidifiedin your mindas you exploreothertopicsof geometryand mathematics.
LessonExercises
Exercises1-5: Classifyeachtriangleby its sidesand by its angles.If you do not haveenoughinformation
to makea classification,write“not enoughinformation.”