Lesson 4-4 Example 3

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4-4 Example 3 Sketch supplementary angles when one angle’s measure is 75°. 1. Use the center point on the protractor as the common vertex of the supplementary angles.

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4-4. Example 3. Lesson 4-4 Example 3. Sketch supplementary angles when one angle’s measure is 75°. 1. Use the center point on the protractor as the common vertex of the supplementary angles. 4-4. Example 3. Lesson 4-4 Example 3. Sketch supplementary angles when one angle’s measure is 75°. - PowerPoint PPT Presentation

Transcript of Lesson 4-4 Example 3

Page 1: Lesson 4-4 Example 3

4-4Example 3

Sketch supplementary angles when one angle’s measure is 75°.

1. Use the center point on the protractor as the common vertex of the supplementary angles.

Page 2: Lesson 4-4 Example 3

4-4Example 3

Sketch supplementary angles when one angle’s measure is 75°.

2. Draw one side of the angle and place an arrow at the end of the ray.

Page 3: Lesson 4-4 Example 3

4-4Example 3

Sketch supplementary angles when one angle’s measure is 75°.

3. The sum of supplementary angles equals 180°. Find the angle on the protractor’s scale and make a dot. Use a straightedge to draw a second ray that connects at the vertex.

Page 4: Lesson 4-4 Example 3

4-4Example 3

Sketch supplementary angles when one angle’s measure is 75°.

4. Find the given angle, 75°, inside the 180° angle and make a dot. Use a straightedge to draw the ray that connects the vertex and the dot at 75° from either of the two existing rays.

Page 5: Lesson 4-4 Example 3

4-4Example 3

Sketch supplementary angles when one angle’s measure is 75°.

5. Find the missing angle by using the protractor’s scale. The supplementary angle is 105°.


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