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Understanding Angles: Parts and Vocabulary

In this lesson, you'll learn to name and identify the essential components of an angle. Key vocabulary includes opposite rays, which are two rays on the same line sharing only their endpoints, and the angle itself, formed by two rays from a common endpoint called the vertex. We will also discuss the straight angle, characterized by a measurement of 180 degrees, and the sides of the angle, which are the two rays forming it. This foundational knowledge is crucial for further studies in geometry.

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Understanding Angles: Parts and Vocabulary

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  1. (over Chapter 2) 1-1a Slide 1 of 2

  2. (over Chapter 2) 1-1b Slide 1 of 2

  3. (over Chapter 2) 1-2a Slide 2 of 2

  4. (over Chapter 2) 1-2b Slide 2 of 2

  5. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  6. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  7. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  8. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  9. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  10. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  11. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  12. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  13. What You’ll Learn: You’ll learn to name and identify parts of an angle Vocabulary: Opposite rays: Two rays that are part of the same line and have only their endpoints in common. Angle: A figure formed by two rays with a common endpoint. Straight Angle: An angle that measures 180°. Side s of an angle: The two rays that form an angle. Vertex: The common endpoint of the rays forming the angle.

  14. 1-1a Slide 1 of 2

  15. 1-1b Slide 1 of 2

  16. 1-1c Slide 1 of 2

  17. 1-1c Slide 1 of 2

  18. 1-1d Slide 1 of 2

  19. 1-1e Slide 1 of 2

  20. 1-2a Slide 2 of 2

  21. 1-2b Slide 2 of 2

  22. 1-2c Slide 2 of 2

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