2. Welcome Back! Do Now: Draw the following polygons.
An equilateral triangle with perimeter 12a + 6b
Two triangles that are not congruent, each with angles measuring 50° and 70°
Two different (noncongruent) quadrilaterals with angles of 60°, 60°, 120°, and 120°
Rhombus EQUI with perimeter 8p and m<IEQ = 55°

3. Homework Review
Important Vocabulary – See PowerPoint posted online and ask a friend.
Definitions:
Chord
Diameter
Radius
Tangent

4. Arcs
Watch this
Things to define:
Arc
Semicircle
Major Arc
Minor Arc

5. Arc Definitions
Arc: Two points on the circle and the continuous part of the circle between the two endpoints
Semicircle: Half a Circle (180°)
Major Arc: Arc that is greater than 180°
Minor Arc: Arc that is less than 180°

6. Labeling Arcs

7. Practice
Identify:
Three Minor Arcs
Three Major Arcs

8. Measuring Arcs

9. Measuring Arcs Practice

10. Finding Measures of Chords

11. Homework
On 10.1, do 1-9
On 10.2, do 7-20