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9. In two intersecting lines, the angles opposite to each other are termed as A. opposite angles C. horizontal angles B. vertical angles D. inscribed angles 10. Lines that intersect in a point are called A. skew lines C. agonic lines B. intersecting lines D. coincident lines 11. Two lines that are not coplanar, A. parallel lines B. skew lines C. secant lines D. straight lines 12. It represents the distance of a point from the y-axis. A. ordinate B. abscissa C. coordinate D. polar distance 13. A tangent to a conic is a line A. which is parallel to the normal B. which touches the conic at only one point C. which passes inside the conic D. all of the above 14. If m is jointly proportional to G and z, where a, b, c and d are constants. Therefore A. m = aG + bz B. m = aGz C. m = aG D. m = bG 15. The arc length is equal to the radius of a circle is called A. 1 grad B. 1 radian C. quarter arc D. pi radian 16. The apothem of a polygon is the _ of its inscribed circle. A. radius B. circumference C. diameter D. length 17. Using the original diameter, d. What is the new diameter when the volume of the sphere is increased 8 times? A. 2d B. 4d C. 3d D. 5d 18. A line segment joining two points on a circle is called A. arc B. tangent C. sector D. chord 19. A/An _triangle is a triangle having three unequal sides A. oblique B. scalene C. equilateral D. isosceles