**Chapter 10 Two Dimensional Figures**

**Domains:**Geometry

**Domains:**Operations and Algebraic Thinking

__Chapter 10 Vocabulary__**an angle that has a measure less than a right angle**

__acute angle-____line__- a straight path of points that continues without end in both directions

**what a shape has if it can be folded about a line so that its tow parts match exactly**

__line of symmetry-__**an angle that has a measure greater than a right angle**

__obtuse angle-__**a part of a line, with one endpoint, that is straight and continues in one direction**

__ray__-**an angle that forms a square corner and has a measure of 90 degrees**

__right angle-__**an angle in which two rays point in opposite directions so that they form a line**

__straight angle-__**Lesson 1**: Lines, Rays, and Angles

**Lesson 2**: Classify Triangles by Angles

**Lesson 3**: Classify Triangles by Slides

**Lesson 4:**Parallel Lines and Perpendicular Lines

**Lesson 5:**Classify Quadrilaterals

**Mid-Chapter Checkpoint**

**Lesson 6:**Line Symmetry

**Lesson 7**: Find and Draw Lines of Symmetry

**Lesson 8:**Problem Solving * Shape Patterns

**Chapter Review/Test**

Chapter Test

Chapter Test