Triangles MCQs Quiz Multiple Choice Questions & Answers

1. Number of element of a triangle is

1. 6
2. 5
3. 4
4. 3

2. ..............congruent triangles can be made by joining the mid points of the sides of a triangle:

1. Three
2. Four
3. Five
4. Two

3. ..........triangle is an equiangular triangle.

1. A scalene
2. An isosceles
3. An equilateral
4. A right angled

4. A line segment from a vertex of triangle perpendicular to the line containing the opposite side, is called an.............of the triangle:

1. Altitude
2. Median
3. Angle bisector
4. Right bisector

5. A line segment joining a vertex of a triangle to the midpoint of its opposite side is called a................of the triangle

1. Altitude
2. Median
3. Angle bisector
4. Right bisector

6. A plane which is formed by three straight edges as its sides is called

1. triangle
2. quadrilateral
3. pentagon
4. hexagon

7. A point equidistant from the end points of a line segment is on its

1. Bisector
2. Right bisector
3. Perpendicular
4. Median

8. A right angled triangle is that in which one of the angles has measure equal to:

1. 80^o
2. 90^o
3. 45^o
4. 60^o

9. A triangle can be constructed by taking its sides as

1. 1.8 cm, 2.6 cm, 4.4 cm
2. 2 cm, 3 cm, 4cm
3. 2.4 cm, 2.4 cm, 6.4 cm
4. 3.2 cm, 2.3 cm, 5.5 cm

10. A triangle can be constructed by taking two of its angles as

1. 110^o, 40^o
2. 70^o, 115^o
3. 135^o, 45^o
4. 90^o, 90^o

11. A triangle having all sides different is called:

1. Isosceles
2. Scalene
3. Equilateral
4. None of these

12. A triangle having all sides equal is called:

1. Isosceles
2. Scalene
3. Equilateral
4. None of these

13. A triangle having two sides congruent is called

1. Scalene
2. Right angled
3. Equilateral
4. Isosceles

14. All the medians of................triangle are equal in measure.

1. a scalene
2. an isosceles
3. an equilateral
4. a right angled

15. All the three altitudes of a triangle are

1. Congruent
2. Concurrent
3. Parallel
4. Perpendicular

16. All the three bisectors of angles of triangle are

1. Congruent
2. Concurrent
3. Parallel
4. Perpendicular

17. All the three medians of a triangle are

1. Congruent
2. Concurrent
3. Parallel
4. Perpendicular

18. All the............right bisectors of sides of triangle are concurrent.

1. One
2. Two
3. Three
4. Four

19. Any two medians of an...........triangle equal is measure.

1. isosceles
2. equilateral
3. acute
4. obtuse

20. By which of the following criterion, the two triangle cannot be proved congruent?

1. AAA rule
2. SSS rule
3. SAS rule
4. ASA

21. Centroid is the point of concurrency of three..........of triangle.

1. right bisectors
2. angle bisectors
3. altitudes
4. medians

22. Circumcentre is point of concurrency of three of three..........of triangle.

1. right bisectors
2. angle bisectors
3. altitudes
4. medians

23. Construction of a triangle is not possible when

1. two sides and an included angle are given
2. three sides are given
3. three angles are given
4. two angles and any side are given

24. Construction of traingle ABC with AB = 9 cm and BC = 6cm is possible when CA is equal to

1. 2cm
2. 3 cm
3. 12 cm
4. 16 cm

25. Corresponding angles of congruent triangles are:

1. congruent
2. non-congruent
3. unequal
4. supplementary

26. Corresponding sides of congruent triangles are:

1. equal
2. different
3. perpendicular
4. parallel

27. Each side of triangle has...........collinear vertices.

1. one
2. two
3. three
4. four

28. Hypotenuse is a side opposite to..............in right angled triangle.

1. 30^o
2. 60^o
3. 90^o
4. 120^o

29. If ABC is an equilateral triangle, then each angle equals to:

1. 90^o
2. 180^o
3. 120^o
4. 60^o

30. If AD is an altitude of an isosceles triangle ABC in which AB = AC. Then:

1. BD=CD
2. BD>CD
3. BD
4. None of the above

31. If sum of measure of two angles is 90^o then angles are............angles.

1. Complementary
2. Supplementary
3. Congruent
4. Acute

32. If sum of measures of two angles is 180^o then angles are...........angles.

1. Complementary
2. Supplementary
3. Equal
4. Right

33. If the three altitudes of a triangle are congruent then the triangle is

1. Equilateral
2. Right angled
3. Isosceles
4. Acute angled

34. If two angles of a triangle are congruent then the sides opposite to them are

1. congruent
2. equal
3. non congruent
4. similar

35. If two legs of aright triangle are 6 cm and 8cm, then its hypotenuse is.

1. 14 cm
2. 12cm
3. 10cm
4. 9 cm

36. If two medians of a triangle are congruent then the triangle will be

1. Isosceles
2. Equilateral
3. Right angled
4. Acute angled

37. In a right triangle, the longest side is:

1. Perpendicular
2. Hypotenuse
3. Base
4. None of the above

38. In equilateral triangle each angle is of

1. 30^o
2. 60^o
3. 90^o
4. 180^o

39. In right-angled triangle if one angle is 30^o, then other angle will be

1. 15^o
2. 30^o
3. 45^o
4. 60^o

40. In right-angled triangle if one angle is 60^o, then other angle will be

1. 15^o
2. 30^o
3. 45^o
4. 60^o

41. In SAS congruency:

1. Corresponding sides are equal
2. Corresponding angles are equal
3. Two corresponding sides and angle included are equal
4. None of these

42. In-centre is the point of concurrency of three............of triangle.

1. Right bisectors
2. Angle bisectors
3. Altitudes
4. Medians

43. Median bisecting the base angle of an isosceles triangle bisects the..............angle.

1. base
2. vertical
3. right
4. acute

44. Medians of triangle are

1. equal
2. concurrent
3. congruent
4. parallel

45. One angle on the base of an isosceles triangle is 30^o. What is the measure of its vertical angle:

1. 30^o
2. 60^o
3. 90^o
4. 120^o

46. Point of concurrency of three medians of a triangle is called.

1. In centre three
2. Ortho centre
3. Centroid
4. Circumcentre

47. Similar triangles are of the same shape but.........in sizes.

1. The same
2. Different
3. Both a and b
4. None of these

48. Sum of all the interior angles of a triangle is.

1. 90^o
2. 150^o
3. 180^o
4. 360^o

49. Sum of interior angles of a triangle is

1. 60^o
2. 120^o
3. 180^o
4. 240^o

50. The altitudes of a right angled triangle are concurrent at the

1. Midpoint of hypotenuse
2. Vertex of right angle
3. Midpoint of base
4. Vertical angle