Math Olympiad Questions with solutions : Understanding Elementary Shapes Class 6
1. John turns right angle three times. How many degrees does he turn through?
2. If two straight lines intersect, the measures of the vertically opposite angles are______.
(A) Equal (B) Not equal (C) Right angle (D) Can’t be determined
3.The minute hand when it moves 330 ° from 11 O’clock, is now at ______.
(A) 9 (B) 11 (C) 12 (D) 10
4.Through how many degrees does the hour hand of a clock turn in 5 minutes?
5.Which angle is shown by the hands of the clock in the given figure?
6.Which of the following statement(s) is/are correct ?
(A) A parallelogram in which two adjacent angles are equal is a rectangle.
(B) A quadrilateral in which both pairs of opposite angles are equal is parallelogram.
(C) In a parallelogram the number of acute angles is two.
(D) All of these
7. Which of the following figures has six faces ?
8. An acute angle is formed between the hands of a clock at______ .
(A) 9 O’clock (B) 4 O’clock (C) 11 O’clock (D) 6 O’clock
10.The angle between two opposite rays is______.
(A) right (B) obtuse (C) acute (D) straight
11.Which of the following is an obtuse angle ?
12.Which of the following statements is INCORRECT ?
(A) Each diagonal of a quadrilateral divides it into two triangles.
(B) Each side of a quadrilateral is less than the sum of the remaining three sides.
(C) A quadrilateral can have atmost three angles .
(D) A quadrilateral has two diagonals.
13.Which of the following describes the given triangle ?
(A) isosceles, obtuse
(B) acute, equilateral
(C) isosceles, right
(D) scalene, right
14.A triangle with one right angle and two acute angles is called____________angled triangle.
(A) Right (B) Acute (C) Obtuse (D) Scalene
15.Which of the following is a right angled triangle ?
16.a possible shape for the photo-frame __________
(A) Square (B) Trapezium (C) Rhombus (D) None of these
17.Which quadrilateral is not a parallelogram?
(A) Rectangle (B) Trapezium (C) Square (D) Rhombus
18.An angle which is equal to 360 ° is called angle.
(A) Right (B) Complete
(C) Acute (D) Obtuse
19.Which of the following closed plane figures is/are not polygons ?
20.In a right angled triangle if an angle measures 35 °, then the measure of other angle is_________
(A) 65 ° (B) 55 ° (C) 45 ° (D) 30 °
21.The angle that the hands of a clock make at 5 O’clock is_______.
22.What shape are the faces of a cube ?
(A) Circle (B) Triangle (C) Square (D) Pentagon
23.Sum of any two sides of a triangle is always_______the third side.
(A) Less than (B) Equal to (C) Greater than (D) Less or equal
24.Which of the following is not a polygon?
25.If a solid shape is completely bounded by plane faces, the least number of faces it may have is______.
(A) 4 (B) 5 (C) 6 (D) 3
26.A bicycle wheel makes four and half turns, then the number of right angles through which it turns is______.
(A) 16 (B) 18 (C) 20 (D) 8
27.Which solid has the greatest number of faces ?
(A) Cone (B) Cylinder (C) Triangular Prism (D) Cube
28.Which of the following is the net for a cylinder?
29.A reflex angle is___________a straight angle.
(A) Smaller than (B) Larger than (C) Equal to (D) One-half of
30.Select the INCORRECT match.
(A) One pair of parallel sides – Trapezium
(B) A rhombus with 4 right angles – Square
(C) Parallelogram with 4 right angles – Rectangle
(D) Two pair of parallel sides – Quadrilateral