### Geometry

**WEBSITES FOR EXTRA HELP**

- Geometry
- Chapter 1- Basics of Geometry
### Chapter 1- Basics of Geometry

Standards:

Know precise definitions of angles, 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. G-CO.1

Make formal geometric constructions with a variety of tools and methods. G-CO.12

Use coordinates to prove simple geometry theorems algebraically. G-GPE.4

Use Coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula. G-GPE.7

Use units as a way to understand problems and to guide the solution of multi-step problems: choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays. N-Q.1

- Chapter 2 - Reasonings and Proof
### Chapter 2 - Reasonings and Proof

Standards:

Prove theorems about line and angles. G-CO.9

Prove theorems about triangles. G-CO.10

Prove theorems about parallelograms. G-CO.11

- Chapter 3- Parallel and Perpendicular Lines
### Chapter 3- Parallel and Perpendicular Lines

Standards:

Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of points, line, distance along a line, and distance around a circular arc. G-CO.1

Prove theorems about line and angles. G-CO.9

Prove theorems about triangles. G-CO.10

Make formal geometric constructions with a variety of tools and methods. G-CO12

Apply geometric methods to solve design problems. G-MG.3

Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems. G-GPE.5

- Chapter 4 - Congruent Triangles
### Chapter 4 - Congruent Triangles

Standards:

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. G-CO.7

Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of congruence in terms of rigid motions. G-CO.8

Prove theorems about triangles. G-CO.10

Make formal geometric constructions with a variety of tools and methods. G-CO.12

Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures. G-SRT.5