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- HSG-CO.D.12Make 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.
- HSG-CO.D.13Construct an equilateral triangle, a square, and a regular hexagon inscribed in a circle.

Tremendous Triangles Projects

Geometry

» Unit:

Tremendous Triangles

Big Idea:It's students' time to shine! Students develop their own problem and then shoot a video to explain how to prove their triangles congruent.

Stephanie Conklin

Suburban Env.

12 Resources

9 Favorites

12 Resources

9 Favorites

Fall Interim Assessment

Geometry

» Unit:

Fall Interim Assessment: Geometry Intro, Constructions and Rigid Motion

Big Idea:This is a comprehensive assessment of Units 1, 2 and 3.

Marisa Laks

Urban Env.

6 Resources

4 Favorites

6 Resources

4 Favorites

Constructing Regular Polygons Inscribed in Circles using Geometer's Sketchpad

Geometry

» Unit:

Geometric Constructions

Big Idea:Students will use rotation to construct regular polygons inscribed in circles.

Marisa Laks

Urban Env.

14 Resources

2 Favorites

14 Resources

2 Favorites

Angles of a Triangle

Geometry

» Unit:

Parallel Lines

Big Idea:Students learn about the different types of triangles, the relationships between the interior and exterior angles of a triangle, and apply their knowledge to numerical problems and constructions.

Beth Menzie

Urban Env.

23 Resources

17 Favorites

23 Resources

17 Favorites

Geometric Constructions Assessment Error Analysis

Geometry

» Unit:

Geometric Constructions

Big Idea:Using a generic student's responses to questions on the End of Unit Assessment, students will identify and explain errors and make corrections.

Marisa Laks

Urban Env.

9 Resources

3 Favorites

9 Resources

3 Favorites

Interior and Exterior Angle Sum of Polygons

Geometry

» Unit:

Discovering and Proving Polygon Properties

Big Idea:Through investigating a variety of polygons with different numbers of sides, students will discover the interior and exterior angle sum for any polygon.

Jessica Uy

Suburban Env.

26 Resources

9 Favorites

26 Resources

9 Favorites

Triangle Sum Theorem and Special Triangles

Geometry

» Unit:

Discovering and Proving Triangle Properties

Big Idea:By investigating the angles of four different types of triangles, students conjecture about the interior angle sum of triangles and ultimately prove the triangle sum theorem.

Jessica Uy

Suburban Env.

22 Resources

9 Favorites

22 Resources

9 Favorites

Constructing Inscribed Regular Triangles, Quadrilaterals and Hexagons

Geometry

» Unit:

Geometric Constructions

Big Idea:Students will use concepts from previous lessons to construct equilateral triangles, squares and regular hexagons inscribed in a circle.

Marisa Laks

Urban Env.

12 Resources

4 Favorites

12 Resources

4 Favorites

Parallel Lines Unit Assessment

Geometry

» Unit:

Parallel Lines

Big Idea:Test time! Students demonstrate their knowledge of parallel lines, the relationships among angles of a triangle and the angle sums of a triangle, constructions, and logic statements.

Beth Menzie

Urban Env.

14 Resources

2 Favorites

14 Resources

2 Favorites

Common Core Geometry Midcourse Assessment Review Day 1 of 2

Geometry

» Unit:

Common Core Geometry Midcourse Assessment

Big Idea:Students create a review sheet covering topics from the first day of the midcourse assessment. They write tips for performing constructions and create questions about transformations on the coordinate plane.

Marisa Laks

Urban Env.

11 Resources

1 Favorite

11 Resources

1 Favorite

Constructing Quadrilaterals using Geometer's Sketchpad

Geometry

» Unit:

Geometric Constructions

Big Idea:Students will construct quadrilaterals, parallelograms, rectangles and squares using Geometer's Sketchpad.

Marisa Laks

Urban Env.

13 Resources

3 Favorites

13 Resources

3 Favorites

Geometric Constructions End of Unit Assessment

Geometry

» Unit:

Geometric Constructions

Big Idea:Students will complete an end of unit assessment on geometric constructions.

Marisa Laks

Urban Env.

8 Resources

2 Favorites

8 Resources

2 Favorites

Constructing Triangles

Geometry

» Unit:

Geometric Constructions

Big Idea:Students will construct triangles given segments of specific lengths.

Marisa Laks

Urban Env.

13 Resources

2 Favorites

13 Resources

2 Favorites

Pulling It All Together: Parallel Lines Unit Review

Geometry

» Unit:

Parallel Lines

Big Idea:Time to pull it all together! Students work cooperatively, applying their knowledge of parallel lines in preparation for the unit test.

Beth Menzie

Urban Env.

24 Resources

1 Favorite

24 Resources

1 Favorite

Perfect Polygons

Geometry

» Unit:

Congruence and Rigid Motions

Big Idea:Constructing polygons inscribed in a circle allows students to experience first-hand the many congruences of a regular polygon. Besides, its fun!

Tom Chandler

Rural Env.

29 Resources

3 Favorites

29 Resources

3 Favorites

HSG-CO.D.12

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.

HSG-CO.D.13

Construct an equilateral triangle, a square, and a regular hexagon inscribed in a circle.