Worksheet

In the adjoining figure, $\mathrm{AB} \mathrm{and} \mathrm{EF}$ intersect at which point.

Identify the below figure as (Open curve/Closed curve):

Identify the below figure as (Open curve/Closed curve):

Is the given figure an $\left(\mathrm{open} \mathrm{curve}\right)$ or a $\left(\mathrm{closed} \mathrm{curve}\right)$?

Identify the below figure as (Open curve/Closed curve):

Identify the below figure as open curve $/$ closed curve.

Study the figure and write the following. 
Common vertex 

Study the figure and write the following. $\left(\mathrm{OF}/\mathrm{OE}/\mathrm{OD}\right)$
Common arm