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Angles Naming Angles Web.

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Presentation on theme: "Angles Naming Angles Web."— Presentation transcript:

1 Angles Naming Angles Web

2 We label the angle with three upper case letters.
Naming Angles An angle is made of two rays. We label the angle with three upper case letters. Naming the Angle Y is called the Vertex  XYZ  ZYX X  Y Exercise 9.1 (page 313) Y Z End of Slide

3 Use a single letter to name the angle.
Naming Angles Use a single letter to name the angle. B A Exercise 9.1 (page 313) B C End of Slide

4 Use a single letter to name the angle.
Naming Angles Use a single letter to name the angle. Q Q P Exercise 9.1 (page 313) R End of Slide

5 Use a single letter to name the angle.
Naming Angles Use a single letter to name the angle. G E Exercise 9.1 (page 313) G F End of Slide

6 Use three letters to name the angle.
Naming Angles Use three letters to name the angle. LNM L Exercise 9.1 (page 313) N M End of Slide

7 Use three letters to name the angle.
Naming Angles Use three letters to name the angle. S RST R Exercise 9.1 (page 313) T End of Slide

8 Use three letters to name the angle.
Naming Angles Use three letters to name the angle. EGF E Exercise 9.1 (page 313) G F End of Show

9 Naming Angles There are several ways to name this angle.
1) Use the vertex and a point from each side. S SRT or TRS side The vertex letter is always in the middle. 2) Use the vertex only. 1 R T side vertex R If there is only one angle at a vertex, then the angle can be named with that vertex. 3) Use a number. 1

10 Angles DEF FED E 2 Definition of Angle
An angle is a figure formed by two noncollinear rays that have a common endpoint. Symbols: DEF E D F 2 FED E 2

11 Angles 1) Name the angle in four ways. ABC CBA B 1
2) Identify the vertex and sides of this angle. vertex: Point B sides: BA and BC


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