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Geometric Constructions and Triangle Inequalities

6th Grade · Math · Open Global Math

8 lessons

Goal

Construct triangles and geometric figures with compass and straightedge, apply the triangle inequality theorem, and construct angle and segment bisectors.

8 lessons
0 of 8 done
  1. Applying the Triangle Inequality Theorem to Solve ProblemsUp next
  2. Finding the Range of Possible Third Side Lengths in a TriangleNot started yet
  3. Constructing Triangles Given Three Side Lengths (SSS)Not started yet
  4. Constructing Triangles Given SAS and ASA ConditionsNot started yet
  5. Drawing Triangles from Three Angle MeasuresYou are here
  6. Constructing Perpendicular Bisectors of Line SegmentsNot started yet
  7. Constructing Angle Bisectors with Compass and StraightedgeNot started yet
  8. Drawing Polygons with Specified Side and Angle PropertiesNot started yet
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Learning standards covered

GlobalOGM.7.GEO.7Open Global Math Standards 2026™ · 6th Grade

Investigate properties of triangles and quadrilaterals: apply the triangle inequality theorem (a + b > c), use the interior angle sum theorem (180° for triangles, 360° for quadrilaterals, (n-2)·180° for n-gons), and classify polygons by side lengths and angle measures.