Understanding Elementary Shapes(6th Grade > Mathematics ) Questions and answers for exam Preparation

6th Grade > Mathematics

UNDERSTANDING ELEMENTARY SHAPES MCQs

Total Questions : 97 | Page 5 of 10 pages

Question 41. How many right angles do you need to add to get a straight angle?
__

Discuss Question

:
Two right angles = 90

^{\circ}

+ 90

^{\circ}

= 180

^{\circ}

= Straight angle.

Question 42. Match the following

1- c; 2- a; 3- b
1- c; 2- b; 3- a
1- a; 2- c; 3- b
1- a; 2- b; 3- c

Discuss Question

Answer: Option A. -> 1- c; 2- a; 3- b
:
A
1 - c (as the sides are not equal)
2 - a (astwo sides are equal)
3 - b (as all sides are equal)

Question 43. Take two regular tetrahedrons and stick them along a common base. The number of edges in the new three-dimensional shape formed is? (Enter number in digits)
__

Discuss Question

:
A tetrahedron has 6 edges. Two tetrahedrons will have 12 edges. After sticking them, 3 edges will be common. So, number of edges = 12 - 3 = 9

Take Two Regular Tetrahedrons And Stick Them Along A Common ...

Question 44. Find which of the following are true:
1.All rhombuses are squares
2.All squares are rectangles
3.All rectangles are parallelograms
4.All parallelograms are quadrilaterals
5.All parallelograms are rhombuses

1, 2 and 3
2, 3 and 4
3, 4 and 5
only 1

Discuss Question

Answer: Option B. -> 2, 3 and 4
:
B
Let us analyze them:

Squares have all angles $= 90^{\circ}$ , which is not true for rhombuses.

Rectangles have opposite sides equal and all angles $= 90^{\circ}$ , true for squares.

Rectangles have opposite sides equal and parallel, true for parallelograms.

Parallelograms have 4 sides, true for quadrilaterals.

Parallelograms may have unequal sides, not true for rhombuses.

So, only 2, 3 and 4 are true.

Question 45. Which one of the polygons mentioned below are regular polygons?

Rhombus
Square
Rectangle
Isosceles triangle

Discuss Question

Answer: Option B. -> Square
:
B
In a regular polygon, all the angles should be same and all the sides should be equal in length.In the given options, only square has all its sides equal and all its angles equal.

Question 46. A line segment is defined as

a curved segment of line
a line with finite length
a line having one end-point
same as line

Discuss Question

Answer: Option B. -> a line with finite length
:
B
A line having a fixed/finite length is known as line segment. It can also be defined as a line having two end points. On the other hand, a line having one end point is known as Ray.

Question 47. If exactly two sides of a triangle are equal, then it is called a/an _______.

scalene triangle
isosceles triangle
equilateral triangle
obtuse angled triangle

Discuss Question

Answer: Option B. -> isosceles triangle
:
B
If exactly two sides of a triangle are equal, then the triangle is calledan isosceles triangle.

Question 48.

You start from your home at point A and run 100 m in West direction to reach point B. After that, you run 50 m in East direction to reach point C. Then you run 100 m in a South direction and reach point D. Which of the following is true?