### Math 10 Chapter 7 - Part B 1. Bisectors of one internal angle and other two opposite exterior angles are ____________. a) Perpendicular b) Concurrent c) Parallel d) Congruent 2. Radius and tangent of a circle are ______________ to each other. a) Congruent b) Parallel c) Perpendicular d) Concurrent 3. Circum-radius of a circle is denoted by ____________. a) R2 b) K c) r d) R 4. In-radius of a circle is denoted by ____________. a) r b) R c) R2 d) r2 5. For the circum circle, ____________ of sides of a triangle are drawn. a) Parallel Bisectors b) Right Bisectors c) Perpendicular Bisectors d) Congruent Bisectors 6. If sum of measure of two sides of a triangle is less than the measure of the third side, it is not possible to construct the triangle a) true b) False 7. The angle inscribed in a semi circle is always obtuse angle. a) False b) True 8. Angle bisectors of a triangle are always concurrent. a) True b) False 9. In-circle of a triangle touches three vertices a) False b) True 10. The line segment joining mid point of a side to opposite vertex is called altitude a) True b) False 11. The right bisectors of sides of a triangle intersect in ratio of 2:1. a) False b) True 12. The median is the right bisector of side of the triangle. a) False b) True 13. Right bisectors of the sides of a triangle are not concurrent. a) False b) True 14. Only one tangent can be drawn from a point outside the circle. a) True b) False 15. The bisectors of one interior and two exterior angles of a triangle are not concurrent. a) False b) True 16. The center of inscribed circle of a triangle is equidistant from its vertices a) False b) True 17. The centre of circum circle of a triangle is equidistant from its vertices. a) False b) True 18. An in circle of a triangle does not touch the sides of a triangle internally. a) False b) True 19. Direct common tangent touches the two circles in such a way that both circles are on one side of the tangent a) True b) False 20. A line bisecting an angle is called altitude. a) True b) False

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