4. It separates the whole number places from the places less than 1
5. A triangle which angle is less than 90;
6. Comes from the latin words per centum which means “out of 100”
7. It is a polygon that has 3 sides, 3 angles and 3 vertices
8. Angles that are next to each other
9. The point when two rays meet at a center.
10. A fraction whose denominator is 10,100 or 1,000