| Standard(s) Taught |
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MAFS.912.G-C.1.2: Identify and describe relationships among inscribed angles, radii, and chords. (Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle.)
MAFS.912.G-GPE.1.1: Derive the equation of a circle of given center and radius using the Pythagorean Theorem; complete the square to find the center and radius of a circle given by an equation.
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| Learning Targets and Learning Criteria |
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- identify central angles, inscribed angles, circumscribed angles, diameters, radii, chords, tangents and
- use the sum of the measures of the central angels of a circle with no interior points in common is 360°.
- describe the relationship between a central angle, inscribed angle, or circumscribed angle and the arc it intercepts.
- recognize that an inscribed angle whose sides intersect the endpoints of the diameter of a circle is a right angle and that the radius of a circle is perpendicular to the tangent where the radius intersects the circle.
- use Pythagorean Theorem to prove lines tangent to a circle at its radius.
- identify the center and radius of a circle given its equation.
- draw a right triangle with a horizontal leg, a vertical leg, and the radius of a circle as its hypotenuse
- write the equation of a circle by using the distance formula (Pythagorean Theorem), the coordinates of a circle’s center, and the circle’s radius.
- rewrite an equation of a circle in general (quadratic) form to standard form by completing the square.
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| Classroom Activities |
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Monday/Tuesday
- Students will take notes on Inscribed Angles in their ISN
- Students will do IXL U.11
- Students will then finish previously assigned IXL’s or worksheets
Wednesday:
- I will give students handouts on Tangents and Secants and we will go over them
- Students will do IXL: New! Angles formed by chords, secants, and tangents
Thursday/Friday:
- Students will do an activity called “Build Understanding for the Equation of a Circle.”
- We will watch some of Math Nation: Section 12, Topic 5
- I will introduce converting from the general form to the standard form of the equation of a circle by completing the square
- Students will do a worksheet on Equations of Circles
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| Assignments Due |
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- IXL’s U.11 and New! Angles formed by chords, secants, and tangents
- Worksheet on Equations of Circles
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| Additional Resources |
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All IEP and ESOL accommodations will be provided daily.
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