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Common Core · Grade 7 · Geometry

Standard 7.G.A.2

Free lessons and printable worksheets aligned to Common Core math standard 7.G.A.2.

5 lessons5 worksheets

Lessons for 7.G.A.2

Constructing a triangle from given partsArcs of the two other lengths swung from the ends of the first meet at the missing vertex.Lesson
Drawing triangles from given sides and angles: one, many or noneDraw triangles from given side lengths and angle measures with ruler and protractor, and decide whether the conditions give one triangle, many or none.Lesson
The ambiguous caseThe altitude from the given angle decides whether zero, one or two triangles can close.Lesson
Triangle angle sumThe three angles add to a straight line, and why.Lesson
Triangle inequalityAny two sides together are longer than the third.Lesson

Printable Worksheets

Constructing a triangle from given parts worksheet (PDF)Printable worksheet with answer keyPreview
Drawing triangles from given sides and angles: one, many or none worksheet (PDF)Printable worksheet with answer keyPreview
The ambiguous case worksheet (PDF)Printable worksheet with answer keyPreview
Triangle angle sum worksheet (PDF)Printable worksheet with answer keyPreview
Triangle inequality worksheet (PDF)Printable worksheet with answer keyPreview