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Printables
Mr. Williams Maths

Eight Circle Theorems Page

For Teachers 8th - 12th Standards
Your learners will find these circle theorems nicely organized with diagrams included that present the geometric relationships between the circle circumference, chords, central and circumference angles and tangents.
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Worksheet
Curated OER

Geometry Review

For Students 10th
In this geometry review learning exercise, 10th graders solve and complete 33 different problems that include identifying various geometric figures and parts of a circle. First, they find the radius of each circle given its diameter....
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Instructional Video1:49
3Blue1Brown

A Curious Pattern Indeed

For Students 9th - 12th Standards
1, 2, 4, 8, 16, 31 ... hold it, that does not seem right. The resource presents the pattern of the number of sections created in a circle by connecting ever-increasing numbers of points on the circle. The video points out that the...
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Worksheet
Curated OER

Angles in Circles

For Students 10th
In this angles in circles worksheet, 10th graders solve 10 different problems that include tangents and chords and intersecting chords. First, they find x when given 2 intersecting chords. Then, students determine x given the diameter...
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Lesson Plan
Curated OER

Chords of a Circle

For Teachers 10th
For this geometry worksheet, 10th graders calculate the length of a chord and the distance from the center of a circle or radius. They compare diameter, chords and radius. There are 10 questions with an answer key.
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Worksheet
Curated OER

Circles Terminology Multiple Choice

For Students 9th - 12th
In this circles worksheet, students solve 10 multiple choice problems. Students answer questions about diameter and chord relationships, tangent lines to a circle, circumference, the Pi relationship, etc.
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Worksheet
Curated OER

Circle Problem

For Students 9th - 12th
In this geometry worksheet, learners calculate what the maximum number of regions are that 8 chords can divide a circle. They follow a pattern to arrive at their answers. There is an answer key with this question.
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Worksheet
Curated OER

Segment Formulas Homework

For Students 9th - 12th
In this geometry worksheet, students examine three different diagrams and apply the appropriate formulas to each of the following situations: two chords, a tangent and a secant, and two secants. There are 17 questions to solve for the...
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PPT
Curated OER

Circles

For Teachers 3rd - 4th
A very basic presentation on the vocabulary associated with circles has come around. Math whizzes see definitions and examples of the radius, diameter, chord, and central angle of a circle. The last slide says "practice time," but there...
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Worksheet
Curated OER

Arcs and Chords

For Students 10th
In this arcs and chords learning exercise, 10th graders solve 7 different types of problems related to identifying arcs and chords in a circle. First, they find the measure of each arc to the nearest tenth, if O is the center point....
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Lesson Plan
Curated OER

Shot Put Arc

For Teachers 6th - 8th
Learners complete Part A: Dissecting a Circle. They generate their own chords within the circle. Students measure the various parts of the arc in the shot put pit. The first two measurements, the chord and distance from the midpoint of...
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Lesson Plan
Curated OER

Properties of Arcs, Lengths and Chords

For Teachers 9th - 11th
Students differentiate between the different properties of arcs, arc lengths, chords, and chord lengths. In this circles instructional activity, students calculate the arc length of a given circle, and find the measure of the inscribed...
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Worksheet
Curated OER

Inscribed and Central Angles in a Circle

For Students 8th - 10th
In this geometry worksheet, students find the missing angle that is inscribed inside of a circle. They define vocabularies related to the circle. There are 17 questions.
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Lesson Plan
Virginia Department of Education

Quadratic Curve of Best Fit

For Teachers 10th - 12th Standards
Class members create a table of the number of chords that can be drawn given the number of points on a circle. Pupils analyze the data created, find a function to fit to it, and use the function to make further predictions.
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Assessment
EngageNY

Geometry Module 5: Mid-Module Assessment

For Teachers 9th - 12th Standards
How can you formally assess understanding of circle concepts? Pupils take a mid-module assessment containing five questions, each with multiple parts.
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Lesson Plan
Curated OER

Investigating the properties of a circle

For Teachers 7th - 10th
Students use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate cyclic...
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Worksheet
Curated OER

Parts of the Circle

For Students 6th - 8th
In this geometry skills worksheet, students respond to 3 questions that require them to examine the part of circles and identify them as diameters, chords, radii, or centers.
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Worksheet
Curated OER

Parts of the Circle

For Students 5th - 7th
In this geometry skills learning exercise, students examine 3 labeled circles and identify the noted items as diameters, chords, radii, or centers.
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Worksheet
Curated OER

Parts of a Circle

For Students 7th - 9th
In this geometric shapes worksheet, students respond to questions that require them to identify chords, radii, diameters and centers of 4 circles.
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Lesson Plan
Curated OER

Chords of a Circle

For Teachers 9th - 12th Standards
Teach how to differentiate between chords and perpendicular bisectors. In this geometry lesson, high schoolers relate the properties of chords and circle to solving right triangle. They define what makes two chords congruent in side a...
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Lesson Plan
Curated OER

Circles and Angles

For Teachers 9th - 11th
Students identify tangents, chords and secants. For this geometry lesson, students graph circles and identify angles created by secant lines, tangent lines and chords.
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Interactive
Curated OER

Arcs and Angles Formed by a Tangent and a Chord

For Students 10th
In this math worksheet, 10th graders solve problems involving a tangent line intersection the arc and forming various angles. There are 6 problems to be solved.
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Worksheet
Curated OER

Tangent Lines

For Students 10th
In this tangent lines learning exercise, 10th graders solve and complete 13 various types of problems. First, they solve the right triangles for the variables shown. Then, students name a radius, a diameter, a tangent, a secant, a point...
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Lesson Plan
Curated OER

Tangent Properties

For Teachers 9th - 12th
Learners explore properties of tangent lines.  In this properties of tangent lines lesson, students discuss the perpendicular relationship between a tangent line on a circle and the circle's radius.  Learners use that...

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