Standard #: MAFS.912.G-CO.4.13 (Archived Standard)


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


General Information

Subject Area: Mathematics
Grade: 912
Domain-Subdomain: Geometry: Congruence
Cluster: Make geometric constructions. (Geometry - Supporting Cluster) -

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Date Adopted or Revised: 02/14
Date of Last Rating: 02/14
Status: State Board Approved - Archived
Assessed: Yes

Test Item Specifications

    Assessed with:
    MAFS.912.G-CO.4.13



Related Courses

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1206320: Geometry Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0101340: Three-Dimensional Studio Art 2 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0101350: Three-Dimensional Studio Art 3 Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0104340: Drawing 1 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0104350: Drawing 2 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0104360: Drawing 3 Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0104370: Painting 1 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0104380: Painting 2 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0104390: Painting 3 Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0109310: Portfolio Development: Drawing-Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0109320: Portfolio Development: Two-Dimensional Design Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0109330: Portfolio Development: Three-Dimensional Design Honors (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0114800: Florida's Preinternational Baccalaureate Art 1 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
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7912070: Access Mathematics for Liberal Arts (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2019, 2019 - 2022, 2022 - 2023, 2023 and beyond (current))
0101355: Creating Two-Dimensional Art (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
0101365: Creating Three-Dimensional Art (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
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Related Resources

Formative Assessments

Name Description
Regular Hexagon in a Circle

Students are asked to construct a regular hexagon inscribed in a circle.

Equilateral Triangle in a Circle

Students are asked to construct an equilateral triangle inscribed in a circle.

Construct the Center of a Circle

Students are asked to construct the center of a circle.

Square in a Circle

Students are asked to construct a square inscribed in a circle.

Lesson Plans

Name Description
Construction of Inscribed Regular Hexagon

A GeoGebra lesson for students to become familiar with computer based construction tools. Students work together to construct a regular hexagon inscribed in a circle using rotations. Directions for both a beginner and advanced approach are provided.

Inscribe Those Rims

This lesson will engage students with an interactive and interesting way to learn how to inscribe polygons in circles.

Construction Junction

Students will learn how to construct an equilateral triangle and a regular hexagon inscribed in a circle using a compass and a straightedge.

Inscribe it

This activity allows students to practice the construction process inscribing a regular hexagon and an equilateral triangle in a circle using GeoGebra software.

Construct Regular Polygons Inside Circles

Students will be able to demonstrate that they can construct, using the central angle method, an equilateral triangle, a square, and a regular hexagon, inscribed inside a circle, using a compass, straightedge, and protractor. They will use worksheets to master the construction of each polygon, one inside each of three different circles. As an extension to this lesson, if computers with GeoGebra are available, the students should be able to perform these constructions on computers as well.

Construct This

In this lesson, students will construct a square inscribed in a circle using the properties of a square and determine if there is more than one way to complete the construction.

Paper Plate Origami

A hands-on activity where students construct inscribed regular polygons in a circle using models. Through guided questions, students will discover how to divide a model (paper plate) into 3, 4, and 6 parts. Using folding, a straightedge, and a compass, they will construct an equilateral triangle, a square, and a regular hexagon in their circles.

Crafty Circumference Challenge

Students learn about geometric construction tools and how to use them. Students will partition the circumference of a circle into three, four, and six congruent arcs which determine the vertices of regular polygons inscribed in the circle. An optional project is included where students identify, find, and use recycled, repurposed, or reclaimed objects to create "crafty" construction tools.

St. Pi Day construction with a compass & ruler

St. Pi Day construction with compass

This activity uses a compass and straight-edge(ruler) to construct a design. The design is then used to complete a worksheet involving perimeter, circumference, area and dimensional changes which affect the scale factor ratio.

Original Student Tutorials

Name Description
A Square Peg in a Round Hole

Learn how to construct an inscribed square in a circle and why certain constructions are used in this interactive tutorial.

Designing with Hexagons

Learn how to construct an inscribed regular hexagon and equilateral triangle in a circle in this interactive tutorial.

Problem-Solving Task

Name Description
Inscribing a hexagon in a circle

This problem solving task challenges students to inscribe equilateral triangles and regular hexagons on a circle with a compass and straightedge.

Tutorial

Name Description
Constructing Polygons Inscribed in Circles

Click "View Site" to open a full-screen version. Geometric constructions using tools such as a compass and straightedge can help students better understand geometric concepts and the underlying principles that govern their relationships. The focus in this tutorial is on the construction of an equilateral triangle, square, and regular hexagon inscribed in a circle.

Virtual Manipulative

Name Description
Inscribe a Regular Hexagon in a Circle

This geogebratube interactive worksheet shows the step by step process for inscribing a regular hexagon in a circle. There are other geogebratube interactive worksheets for the square and the equilateral triangle.

Student Resources

Original Student Tutorials

Name Description
A Square Peg in a Round Hole:

Learn how to construct an inscribed square in a circle and why certain constructions are used in this interactive tutorial.

Designing with Hexagons:

Learn how to construct an inscribed regular hexagon and equilateral triangle in a circle in this interactive tutorial.

Problem-Solving Task

Name Description
Inscribing a hexagon in a circle:

This problem solving task challenges students to inscribe equilateral triangles and regular hexagons on a circle with a compass and straightedge.

Virtual Manipulative

Name Description
Inscribe a Regular Hexagon in a Circle:

This geogebratube interactive worksheet shows the step by step process for inscribing a regular hexagon in a circle. There are other geogebratube interactive worksheets for the square and the equilateral triangle.



Parent Resources

Problem-Solving Task

Name Description
Inscribing a hexagon in a circle:

This problem solving task challenges students to inscribe equilateral triangles and regular hexagons on a circle with a compass and straightedge.



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