1 / 17

190 likes | 326 Vues

Angle Measure. Sec: 1.4. Angles. Are formed By two non-collinear rays. They have a common endpoint. The two rays are called sides of an angle. The common endpoint is the vertex. Side. B. Vertex. A. C. Side.

Télécharger la présentation
## Angle Measure

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Angle Measure**Sec: 1.4**Angles**• Are formed By two non-collinear rays. • They have a common endpoint. • The two rays are called sides of an angle. • The common endpoint is the vertex. Side B Vertex A C Side**There are three ways to name an angle(1) Using 3 points,**(2) Using 1 point (3) Using a number – next slide A C B Lesson 1-4: Angles**Naming an Angle - continued**Using a number: A B 2 C Lesson 1-4: Angles**Example 1**• Name the following angle. B A 4 C**Example 2Name the different angles**Lesson 1-4: Angles**Example 3Name the angles**• K is the vertex of more than one angle. Therefore, there is NO in this diagram. Lesson 1-4: Angles**Notes - Angle and Points**• Angles can have points in the interior, in the exterior or on the angle. E A D B C Points A, B and C are on the angle. D is in the interior and E is in the exterior. B is the vertex. Lesson 1-4: Angles**Example 4**Name all angles with B as a vertex. 2. Name the sides of angle 5. 3. Write another name for angle 6.**Classifying Angles:**D A B C**Example 5**Classify each angle as right, obtuse, acute or straight. 1. Angle TYV 2. Angle WYT 3. Angle TYU 4. angleTYX**Congruent angles**• Two angles with the same angle measure are said to be congruent. Example:**Angle Addition Postulate**Postulate: The sum of the two smaller angles will always equal the measure of the larger angle. Complete: m ____ + m ____ = m _____ MRK KRW MRW Lesson 1-4: Angles**Example 6**m1 + m2 = Therefore, mADC = Lesson 1-4: Angles**Example 7: Angle Addition**K is interior to MRW, m MRK = (3x), m KRW = (x + 6) and mMRW = 90º. Find mMRK. Lesson 1-4: Angles**Example 8:Angle Addition**K is interior to MRW, m MRK = (2x + 10), m KRW = (4x - 3) and mMRW = 145º. Find mMRK and m KRW. Lesson 1-4: Angles

More Related