Extension 4 A Geometry Math Vocabulary Circles Assessment

Extension #4 A Geometry Math Vocabulary- Circles Assessment Anchor M 5. B PA Academic Standard 2. 9. 5 C Aligning with Pennsylvania Department of Education Assessment Anchor/ Academic Standard © 2011 Caryn Dingman www. mrsdingman. com

circle * a closed plane figure * all points on figure are same distance from center point * has no beginning point and no ending point * named by a point in the center Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 2

circumference * distance around outer edge of circle Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 3

chord * a line segment * connects ANY 2 points on a circle Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 4

radius * a line segment * connects center point of circle with point on outer edge of circle Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 5

diameter * is a line segment * is a chord * connects center point of circle with points on outer edge of circle Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 6

formula to find diameter * to find diameter when radius is given, multiply radius by 2 radius = 4 cm diameter = 2 r d = 2 X 4 cm d = 8 cm Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 7

formula to find radius * to find radius when diameter is given, divide diameter by 2 diameter = 3 in. radius = d ÷ 2 r = 3 in. ÷ 2 r = 1. 5 in. Extension #4 A Geometry- Circles PA Assessment Anchor M 5. B/ Academic Standard 2. 9. 5 C 8