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9. It is a closed plane figure made up of points.
a. circle
b. polygon
C. polyhedron
10. It is a line segment from the center to any point on the circle.
a. chord
b. diameter
c. radius
11. A diameter of a circle is 4 cm long. How long is a radius of that circle?
a. 2 cm
b. 3 cm
c. 5 cm
12. A radius of a circle is 9 cm long. How long is a diameter of that circle?
a. 10 cm
b. 15 cm
c. 18 cm​


Sagot :

Answer:

9.B

10.B

11.C

12.A

Step-by-step explanation:

Because that's what my mind says❤️

Sana maka tulong