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Ohio's Academic Content Standards in Mathematics

Grade Level Indicator Resources

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Ohio Standard: Geometry and Spatial Sense Standard
Grade Level Indicator: (Grade: 7) 4. Determine necessary conditions for congruence of triangles.
1
Congruent Triangles
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ORC# 4113
Resource Information
Resource URL: http://nlvm.usu.edu/en/nav/frames_asid_165_g_3_t_3.html?open=ins...
Resource Type: Content Supports
Discipline: Mathematics
Grades: Grades 6–10
Professional Commentary: This applet helps students discover the three sets of criteria (SSS, ASA, SAS) that determine congruent triangles by seeing for themselves that there is at most one triangle they can construct with specified combinations of angles and sides. In the ambiguous case (SSA) they can construct two different triangles....
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2
Congruence Theorems
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ORC# 3308
Resource Information
Resource URL: http://illuminations.nctm.org/ActivityDetail.aspx?ID=4
Resource Type: Content Supports
Discipline: Mathematics
Grades: Grades 7–10
Professional Commentary: Students use an applet to explore the conditions that guarantee uniqueness of a triangle, quadrilateral, or pentagon, regardless of location or orientation. Each set of conditions results in a new congruence theorem....
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