# Common Core Geometry Math (Worksheets, Homework, Lesson Plans)

Looking for video lessons that will help you in your Common Core Geometry math classwork or homework?

Looking for Common Core Math Worksheets and Lesson Plans that will help you prepare lessons for Geometry students?

The following lesson plans and worksheets are from the New York State Education Department Common Core-aligned educational resources. Eureka/EngageNY Math Geometry Worksheets.

These Lesson Plans and Worksheets are divided into five modules.

### Geometry Homework, Lesson Plans and Worksheets

Topics and Objectives (Module 1)
Congruence, Proof, and Constructions

Module 1 Overview

Topic A Overview

Lesson 1: Construct an Equilateral Triangle (Video Lesson)

Lesson 2: Construct an Equilateral Triangle (Video Lesson)

Lesson 3: Copy and Bisect an Angle (Video Lesson)

Lesson 4: Construct a Perpendicular Bisector (Video Lesson)

Lesson 5: Points of Concurrencies (Video Lesson)

Unknown Angles

Topic B Overview

Lesson 6: Solve for Unknown Angles—Angles and Lines at a Point (Video Lesson)

Lesson 7: Solve for Unknown Angles—Transversals (Video Lesson)

Lesson 8: Solve for Unknown Angles — Angles in a Triangle (Video Lesson)

Lesson 9: Unknown Angle Proofs — Writing Proofs (Video Lesson)

Lesson 10: Unknown Angle Proofs — Proofs with Constructions (Video Lesson)

Lesson 11: Unknown Angle Proofs — Proofs of Known Facts (Video Lesson)

Transformations/Rigid Motions

Topic C Overview

Lesson 12: Transformations—The Next Level (Video Lesson)

Lesson 13: Rotations (Video Lesson)

Lesson 14: Reflections (Video Lesson)

Lesson 15: Rotations, Reflections, and Symmetry (Video Lesson)

Lesson 16: Translations (Video Lesson)

Lesson 17: Characterize Points on a Perpendicular Bisector (Video Lesson)

Lesson 18: Looking More Carefully at Parallel Lines (Video Lesson)

Lesson 19: Construct and Apply a Sequence of Rigid Motions (Video Lesson)

Lesson 20: Applications of Congruence in Terms of Rigid Motions (Video Lesson)

Lesson 21: Correspondence and Transformations (Video Lesson)

Congruence

Topic D Overview

Lesson 22: Congruence Criteria for Triangles—SAS (Video Lesson)

Lesson 23: Base Angles of Isosceles Triangles (Video Lesson)

Lesson 24: Congruence Criteria for Triangles—ASA and SSS (Video Lesson)

Lesson 25: Congruence Criteria for Triangles—AAS and HL (Video Lesson)

Lesson 26, Lesson 27: Triangle Congruency Proofs (Video Lesson)

Congruence

Topic E Overview

Lesson 28: Properties of Parallelograms (Video Lesson)

Lesson 29: Special Lines in Triangles (Video Lesson)

Lesson 30: Special Lines in Triangles (Video Lesson)

Topic F Overview

Lesson 31: Construct a Square and a Nine-Point Circle (Video Lesson)

Lesson 32: Construct a Nine-Point Circle (Video Lesson)

Axiomatic Systems

Topic G Overview

Lesson 33: Review of the Assumptions (Video Lesson)

Lesson 34: Review of the Assumptions (Video Lesson)

Topics and Objectives (Module 2)
Similarity, Proof, and Trigonometry

Module 2 Overview

Topic A Overview

Lesson 1: Scale Drawings (Video Lesson)

Lesson 2: Making Scale Drawings Using the Ratio Method (Video Lesson)

Lesson 3: Making Scale Drawings Using the Parallel Method (Video Lesson)

Lesson 4: Comparing the Ratio Method with the Parallel Method (Video Lesson)

Lesson 5: Scale Factors (Video Lesson)

Dilations

Topic B Overview

Lesson 6: Dilations as Transformations of the Plane (Video Lesson)

Lesson 7: How Do Dilations Map Segments? (Video Lesson)

Lesson 8: How Do Dilations Map Lines, Rays, and Circles? (Video Lesson)

Lesson 9: How Do Dilations Map Angles? (Video Lesson)

Lesson 10: Dividing the King’s Foot into 12 Equal Pieces (Video Lesson)

Lesson 11: Dilations from Different Centers (Video Lesson)

Similarity and Dilations

Topic C Overview

Lesson 12: What Are Similarity Transformations, and Why Do We Need Them? (Video Lesson)

Lesson 13: Properties of Similarity Transformations (Video Lesson)

Lesson 14: Similarity (Video Lesson)

Lesson 15: The Angle-Angle (AA) Criterion for Two Triangles to Be Similar (Video Lesson)

Lesson 16: : Between-Figure and Within-Figure Ratios (Video Lesson)

Lesson 17: The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar (Video Lesson)

Lesson 18: Similarity and the Angle Bisector Theorem (Video Lesson)

Lesson 19: Families of Parallel Lines and the Circumference of the Earth (Video Lesson)

Lesson 20: How Far Away Is the Moon? (Video Lesson)

Applying Similarity to Right Triangles

Topic D Overview

Lesson 21: Special Relationships Within Right Triangles—Dividing into Two Similar Sub-Triangles (Video Lesson)

Lesson 22: Multiplying and Dividing Expressions with Radicals (Video Lesson)

Lesson 24: Prove the Pythagorean Theorem Using Similarity (Video Lesson)

Trigonometry

Topic E Overview

Lesson 25: : Incredibly Useful Ratios (Video Lesson)

Lesson 26: Definition of Sine, Cosine, and Tangent (Video Lesson)

Lesson 27: Sine and Cosine of Complementary and Special Angles (Video Lesson)

Lesson 28: Solving Problems Using Sine and Cosine (Video Lesson)

Lesson 29: Applying Tangents (Video Lesson)

Lesson 30: Trigonometry and the Pythagorean Theorem (Video Lesson)

Lesson 31: Using Trigonometry to Determine Area (Video Lesson)

Lesson 32: Using Trigonometry to Find Side Lengths of an Acute Triangle (Video Lesson)

Lesson 33: Applying the Laws of Sines and Cosines (Video Lesson)

Lesson 34: Unknown Angles (Video Lesson)

Topics and Objectives (Module 3)
Extending to Three Dimensions
Module 3 Overview

Topic A Overview

Lesson 1: What Is Area? (Video Lesson)

Lesson 2: Properties of Area (Video Lesson)

Lesson 3: The Scaling Principle for Area (Video Lesson)

Lesson 4: Proving the Area of a Disk (Video Lesson)

Volume

Topic B Overview

Lesson 5: Three-Dimensional Space (Video Lesson)

Lesson 6: General Prisms and Cylinders and Their Cross-Sections (Video Lesson)

Lesson 7: General Pyramids and Cones and Their Cross-Sections (Video Lesson)

Lesson 8: Definition and Properties of Volume (Video Lesson)

Lesson 9: Scaling Principle for Volumes (Video Lesson)

Lesson 10: The Volume of Prisms and Cylinders and Cavalieri’s Principle (Video Lesson)

Lesson 11: The Volume Formula of a Pyramid and Cone (Video Lesson)

Lesson 12: The Volume Formula of a Sphere (Video Lesson)

Lesson 13: How Do 3D Printers Work? (Video Lesson)

Topics and Objectives (Module 4)
Connecting Algebra and Geometry Through Coordinates

Module 4 Overview

Topic A Overview

Lesson 1: Searching a Region in the Plane (Video Lesson)

Lesson 2: Finding Systems of Inequalities That Describe Triangular and Rectangular Regions (Video Lesson)

Lesson 3: Lines That Pass Through Regions (Video Lesson)

Lesson 4: Designing a Search Robot to Find a Beacon (Video Lesson)

Perpendicular and Parallel Lines in the Cartesian Plane

Topic B Overview

Lesson 5: Criterion for Perpendicularity (Video Lesson)

Lesson 6: Segments That Meet at Right Angles (Video Lesson)

Lesson 7: Equations for Lines Using Normal Segments (Video Lesson)

Lesson 8: Parallel and Perpendicular Lines (Video Lesson)

Perimeters and Areas of Polygonal Regions in the Cartesian Plane

Topic C Overview

Lesson 9: Perimeter and Area of Triangles in the Cartesian Plane (Video Lesson)

Lesson 10: Perimeter and Area of Polygonal Regions in the Cartesian Plane (Video Lesson)

Lesson 11: Perimeters and Areas of Polygonal Regions Defined by Systems of Inequalities (Video Lesson)

Partitioning and Extending Segments and Parameterization of Lines

Topic D Overview

Lesson 12: Dividing Segments Proportionately (Video Lesson)

Lesson 13: Analytic Proofs of Theorems Previously Proved by Synthetic Means (Video Lesson)

Lesson 14: Motion Along a Line—Search Robots Again (Video Lesson)

Lesson 15: The Distance from a Point to a Line (Video Lesson)

Topics and Objectives (Module 5)
Circles With and Without Coordinates

Module 5 Overview

Topic A Overview

Lesson 1: Thales’ Theorem (Video Lesson)

Lesson 2: Circles, Chords, Diameters, and Their Relationships (Video Lesson)

Lesson 3: Rectangles Inscribed in Circles (Video Lesson)

Lesson 4: Experiments with Inscribed Angles (Video Lesson)

Lesson 5: Inscribed Angle Theorem and Its Applications (Video Lesson)

Lesson 6: Unknown Angle Problems with Inscribed Angles in Circles (Video Lesson)

Arcs and Sectors

Topic B Overview

Lesson 7: The Angle Measure of an Arc (Video Lesson)

Lesson 8: Arcs and Chords (Video Lesson)

Lesson 9: Arc Length and Areas of Sectors (Video Lesson)

Lesson 10: Unknown Length and Area Problems (Video Lesson)

Secants and Tangents

Topic C Overview

Lesson 11: Properties of Tangents (Video Lesson)

Lesson 12: Tangent Segments (Video Lesson)

Lesson 13: The Inscribed Angle Alternate—A Tangent Angle (Video Lesson)

Lesson 14: Secant Lines; Secant Lines That Meet Inside a Circle (Video Lesson)

Lesson 15: Secant Angle Theorem, Exterior Case (Video Lesson)

Lesson 16: Similar Triangles in Circle-Secant (or Circle-SecantTangent) Diagrams (Video Lesson)

Equations for Circles and Their Tangents

Topic D Overview

Lesson 17: Writing the Equation for a Circle (Video Lesson)

Lesson 18: Recognizing Equations of Circles (Video Lesson)

Lesson 19: Equations for Tangent Lines to Circles (Video Lesson)

Topic E Overview

Lesson 20: Cyclic Quadrilaterals (Video Lesson)

Lesson 21: Ptolemy’s Theorem (Video Lesson)

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