1. LESSON 6.2-6.4 Ms. Gardner

2. What is an Angle? An angle is formed by two rays (parts of a line) that share the same end point. Ray = Fancy word for “arm” Vertex = Point where both “arms” meet

3. Three Types of Angles Acute Angle: “Skinny” Angle, Measures between 0 and 90 degrees. Right Angle: Measures 90 degrees Obtuse Angle: “Fat” Angle, Measures between 90 degrees and 180 degrees

4. Acute Angle (baby angle)

5. Right Angle (middle aged angle)

6. Obtuse Angle (old angle)

7. Flip Chart Review… Informal Assessment

8. CIRCLES What do you remember about CIRCLES?

9. Important Parts of a Circle A circle is a closed plane figure made up of all the points the SAME DISTANCE from the center point. You name a circle by its CENTER POINT. This is “Circle A”.

10. Radius The radius is any line segment that connects the CENTER to ONE POINT on the circle.

11. Diameter The diameter is any line segment through the CENTER that connects TWO POINTS on the circle.

12. Quiz… What is the difference between the RADIUS and the DIAMETER of a circle?

13. A chord is any line segment that connects TWO POINTS on the circle (NOT USING THE CENTER POINT) Diameter? Radius? Center? Chord?