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140 resources with the concept geometric constructions

Lesson Planet

Start with a Circle...

For Students K - 12th
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
Lesson Planet

Practice: Measuring Angles and Using a Protractor and More!

For Students 4th - 6th Standards
Four fabulous worksheets are included in this resource, all having to do with the measurement of angles. On the first, anglers will use a protractor to determine the degrees of 10 different angles. An arc is drawn on each. On the second,...
Lesson Planet

Angles

For Teachers 4th - 5th
Fourth and fifth graders investigate angles and name them according to the criteria for obtuse, acute, and right angles. They examine a human-made yarn pattern on the floor of their classroom and identify angles, vertices, and types of...
Lesson Planet

The Angle Tangle

For Teachers 4th - 5th Standards
Fourth and fifth graders identify three types of angles, recognize that angles are measured in degrees, measure angles using protractors or angle rulers. They classify angles as a class, classify angles on pattern blocks, and complete a...
Lesson Planet

Protractors

For Students 4th - 6th
Did your students forget to bring their protractors to class again? Using this resourceful copy of four identical protractors, you can easily make a class set or let your students take them home. 
3:10
Lesson Planet

Hexagon Inscribed Within a Circle

For Students 8th - 12th Standards
Mark off the length of the radius around the circle. Using a compass, the presenter shows how to construct a regular hexagon in a circle. Pupils see how triangles formed in the hexagon are equilateral, allowing for the construction to...
2:51
Lesson Planet

Construct a 90 Degree Angle

For Students 8th - 12th Standards
There is more than one way to create a 90-degree angle. Using a compass and a straightedge, the video shows two ways to construct a right angle. The ways include using perpendicular bisectors and circle theorems. To wrap up, pupils...
2:47
Lesson Planet

Constructing Equilateral Triangles and 60 Degree Angles

For Students 8th - 12th Standards
Creating a 60-degree angle also creates an equilateral triangle. By watching the video, individuals learn the steps required to construct a 60-degree angle. The presentation shows that the process is the same for constructing an...
Lesson Planet

Loci and Constructions

For Students 8th - 11th Standards
A General Certificate of Secondary Education math review has class members make basic constructions. Using a protractor and a ruler along with a compass, pupils develop drawings of triangles with given measurements. Scholars use their...
2:01
Lesson Planet

Construct a 45 Degree Angle

For Students 8th - 11th Standards
Create a 45-degree angle without bisecting an angle. A video shows a method to construct a 45-degree angle without needing to bisect a right angle. By constructing an isosceles right triangle, the presenter constructs a 45-degree angle...
4:47
Lesson Planet

Construct a 30 Degree Angle

For Students 8th - 11th Standards
Split it down the middle. Using the tools of geometric construction, the video shows two different methods of constructing a 30-degree angle. The first method bisects an angle of an equilateral triangle. The second uses the diagonal of a...
2:06
Lesson Planet

Angle Bisector

For Students 8th - 11th Standards
Cut it in half with a compass and straightedge! Using construction tools, a video shows how to create an angle bisector. The presenter points out what it means to bisect an angle in terms of the measure and distances from the sides of...
2:16
Lesson Planet

Perpendicular from a Line to a Point

For Students 8th - 11th Standards
Take steps in the right direction. With a short demonstration, a video shows the steps to construct a perpendicular from a line to a point. Using a protractor, the narrator confirms the resulting construction is perpendicular, and then...
1:54
Lesson Planet

Perpendicular Through a Point on a Line

For Students 8th - 11th Standards
Use one construction to complete a second. The short video shows how to incorporate the steps of a perpendicular bisector to create a perpendicular to a point on a line. With their own straightedges and compasses, classmates then...
6:35
Lesson Planet

Perpendicular Bisector

For Students 8th - 11th Standards
Where should the statue be located? The resource explains how to use a compass and straight-edge to construct the perpendicular bisector of a line segment. Using an exam question, the narrator models how to solve an application problem...
Lesson Planet

Module 2: Congruence, Construction and Proof

For Teachers 9th - 12th Standards
Construct yourself a winning geometry unit. A set of lessons introduces geometry scholars to constructions and proofs with compasses and straightedges. It also covers triangle congruence through transformations. This is the second of...
Lesson Planet

Suitcase Circle

For Teachers 9th - 12th Standards
Analyze patterns in a circular arrangement. After using a geometric construction to complete a circle, learners use proportional reasoning to make predictions. By determining the length of an arc built from suitcases, they estimate the...
Lesson Planet

Geometric Construction Site

For Teachers 9th - 12th Standards
Beware of the construction zone and watch for duplicating line segments and angles. The lesson plan leads pupils through the construction of congruent of line segments and angles. Class members follow the teacher's directions and then...
Lesson Planet

Halfway to the Middle!

For Teachers 9th - 12th Standards
Discover how to divide the sides in half to create fourths. Using construction tools, learners find the midpoints of the three sides of two triangles. First, they create four triangles by drawing in the line segments connecting the...
Lesson Planet

Using a Compass to Construct a Tangent Line

For Students 9th - 12th Standards
Don't just touch upon the resource once; use it again and again. Pupils construct a tangent line to a given circle that intersects the circle at one point. The strategy here is to use a compass and straightedge.
Lesson Planet

Crafty Circumference Challenge

For Teachers 9th - 12th Standards
With a little imagination, you can make these construction tools work, too. A creative instructional activity builds upon the knowledge of construction tools to come up with other tools to use. Pupils learn how to construct a regular...
Lesson Planet

Copying and Bisecting an Angle

For Teachers 9th - 12th Standards
Take one angle and get two. The presentation provides the steps required to copy and bisect an angle. Pupils follow the steps to create the two constructions. They create their own foldable to keep track of the steps for each construction.
Lesson Planet

Construction Junction

For Students 9th - 12th Standards
A prescription for inscribing polygons makes for an interesting lesson. Individuals follow a set of written instructions to construct both an equilateral triangle and regular hexagon inscribed in a circle. An extra handout allow learners...
Lesson Planet

Constructing an Angle Bisector

For Students 9th - 12th Standards
Demonstrate the angle bisector construction using both teacher-led and student-led guided practice. Scholars learn the process and practice the construction multiple ways. They verify their work with protractors and patty paper.