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IXL Skill Plan

Math Florida Standards (MAFS): Geometry

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Math Florida Standards (MAFS) - Geometry

912.G | Geometry

912.G-C Circles 912.G-C.1: Understand and apply theorems about circles

912.G-C.1.1: Prove that all circles are similar. 912.G-C.1.2: Identify and describe relationships among inscribed angles, radii, and chords.

912.G-C.1.3: Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle.

Checkpoint opportunity

912.G-C.2: Find arc lengths and areas of sectors of circles

1. Similarity of circles NEP

Central and inscribed angles

1. Central angles and arc measures VZX 2. Inscribed angles 98U 3. Angles in inscribed right triangles 6DL

Chords, secants, and tangents

4. Arcs and chords P63 5. Tangent lines CFV 6. Angles formed by chords, secants, and

tangents ZN9 7. Segments formed by chords, secants, and

tangents HPE

Constructions

1. Construct the circumcenter or incenter of a triangle EC6

2. Construct the inscribed or circumscribed circle of a triangle 8VS

Properties of angles

3. Angles in inscribed quadrilaterals I 24Y 4. Angles in inscribed quadrilaterals II 2Y5

1. Checkpoint: Prove circles are similar GXP 2. Checkpoint: Angles and lines in circles T95 3. Checkpoint: Inscribed and circumscribed

circles DCT

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Math Florida Standards (MAFS) - Geometry

912.G-C.2.5: Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

Checkpoint opportunity 912.G-CO Congruence 912.G-CO.1: Experiment with transformations in the plane

912.G-CO.1.1: Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc. 912.G-CO.1.2: Represent transformations in the plane using, e.g., transparencies and geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not (e.g., translation versus horizontal stretch).

912.G-CO.1.3: Given a rectangle, parallelogram,

1. Understand arc length and sector area of a circle UGV

2. Arc length 7L9 3. Convert between radians and degrees NJ9 4. Radians and arc length N8Y 5. Area of sectors XZQ 1. Checkpoint: Arc length and area of sectors 57A

1. Angle vocabulary 9U2

Translations

1. Translations: graph the image 7AC 2. Translations: find the coordinates F8U 3. Translations: write the rule 9PR

Reflections

4. Reflections: graph the image SM9 5. Reflections: find the coordinates SVY

Rotations

6. Rotations: graph the image 6SD 7. Rotations: find the coordinates ZX5

Congruence transformations

8. Classify congruence transformations CXT

Dilations

9. Dilations: graph the image ZRD 10. Dilations: find the coordinates 5KZ 11. Dilations: find the scale factor ZDM

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Math Florida Standards (MAFS) - Geometry

trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.

912.G-CO.1.4: Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.

912.G-CO.1.5: Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g., graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another.

Checkpoint opportunity

912.G-CO.2: Understand congruence in terms of rigid motions

912.G-CO.2.6: Use geometric descriptions of rigid motions to transform figures and to predict the effect of a given rigid motion on a given figure; given two figures, use the definition of congruence in terms of rigid motions to decide if they are congruent.

912.G-CO.2.7: Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

912.G-CO.2.8: Explain how the criteria for triangle congruence (ASA, SAS, SSS, and Hypotenuse-Leg) follow from the definition of

1. Transformations that carry a polygon onto itself RJW

1. Rotate polygons about a point XM7

Graph an image

1. Translations: graph the image 7AC 2. Reflections: graph the image SM9 3. Rotations: graph the image 6SD

Sequences of transformations

4. Sequences of congruence transformations: graph the image WHW

5. Sequences of congruence transformations: find the rules GFH

1. Checkpoint: Definitions of geometric objects 2JF 2. Checkpoint: Transformations in the plane MPY 3. Checkpoint: Transformations of geometric

figures D5L

1. Sequences of congruence transformations: graph the image WHW

2. Transformations that carry a polygon onto itself RJW

3. Congruence transformations: mixed review XQ7

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Math Florida Standards (MAFS) - Geometry

congruence in terms of rigid motions. Checkpoint opportunity 912.G-CO.3: Prove geometric theorems

912.G-CO.3.9: Prove theorems about lines and angles; use theorems about lines and angles to solve problems. 912.G-CO.3.10: Prove theorems about triangles; use theorems about triangles to solve problems.

912.G-CO.3.11: Prove theorems about parallelograms; use theorems about parallelograms to solve problems.

Checkpoint opportunity

912.G-CO.4: Make geometric constructions 912.G-CO.4.12: Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric

1. Checkpoint: Rigid motion and congruence H9L

1. Proofs involving angles HV9 2. Proofs involving parallel lines I CUV 3. Proofs involving parallel lines II 5U8

Corresponding parts of congruent triangles

1. Proofs involving corresponding parts of congruent triangles AKL

Isosceles and equilateral triangles

2. Congruency in isosceles and equilateral triangles HPR

3. Proofs involving isosceles triangles V45

Segments and relationships within triangles

4. Midsegments of triangles 8GT 5. Triangles and bisectors GWE 6. Angle-side relationships in triangles ZN8 7. Triangle Inequality Theorem BW7 8. Proofs involving triangles I G78 9. Proofs involving triangles II DUQ

1. Properties of parallelograms LLK 2. Proving a quadrilateral is a parallelogram H89 3. Properties of rhombuses QVX 4. Properties of squares and rectangles R9M

1. Checkpoint: Line and angle theorems SXW 2. Checkpoint: Triangle theorems PN5 3. Checkpoint: Parallelogram theorems F5J

Angles

1. Construct an angle bisector FHL 2. Construct a congruent angle F7V

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