US Common Core State Standard Math HSG-CO.D.12
Demonstrations 1 - 20 of 20

Description of Standard: Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.). Copying a segment; copying an angle; bisecting a segment; bisecting an angle; constructing perpendicular lines, including the perpendicular bisector of a line segment; and constructing a line parallel to a given line through a point not on the line.

 Intersecting CirclesUpdated this month Doubling a Distance with a CompassUpdated this month Albrecht Dürer's Heptagon of 1525 Distance of a Point to a Segment The Trammel of Archimedes Triangle Side Length Inequality Angle Bisectors of Two Intersecting Lines Mascheroni's Construction of the Center of a Circle Folding an Equilateral Triangle in a Square Angle Bisectors in a Triangle Albrecht Dürer's Pentagon of 1525 Parabolic Envelope from Congruent Triangles Two Lines Determine a Circle Triangles: Scalene, Isosceles, and Equilateral Constructing a Regular Pentagon with Ruler and Compass The Perpendicular Bisectors of a Triangle Indestructible Perpendicular Lines The Eye-Pentagon Construction Swinging Double Slider-Crank Bisection of Line Segment

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