Understanding Elementary Shapes Test

Result

Understanding Elementary Shapes Test - 3

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Question 1
1 / -0

Number of straight angles a minute hand makes when hour hand moves from:

(a) 2 to 6
(b) 3 to 5

A
(a) 6, (b) 2

B
(a) 4, (b) 2

C
(a) 2, (b) 5

D
(a) 8, (b) 4

Solution

A minute hand makes 1 straight angle in 1 hour. So, from 2 to 6, there are total 4 hours.
So, total number of straight angles = 4
Similarly, from 3 to 5, there are 2 hours. So, there are total 2 straight angles.
Question 2
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By what number, the edges of a triangular pyramid are less than or more than a square pyramid?

A
3 more

B
3 less

C
2 more

D
2 less

Solution

Number of edges in triangular pyramid = 6
Number of edges in square prism = 8

So, there are 2 edges less in a triangular pyramid than in a square pyramid.
Question 3
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State T for true and F for false.

(a) There are 6 sides in a hexagon.
(b) A rectangle has all the 4 sides equal.
(c) Diagonals of a rhombus are equal.
(d) 1/4 of a revolution is a right angle.

(a) (b) (c) (d)

A F F T T

B F T F T

C T T T F

D T F F T

A
A

B
B

C
C

D
D

Solution

There are 6 sides in a hexagon.

A rectangle has a pair of opposites sides equal.

Diagonal of a rhombus are not necessarily equal.

1/4 of a revolution is a right angle. Because total of a revolution is 360^o.
Question 4
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Which of the following statements is correct?

A. Acute angle is greater than right angle.
B. Measure of a reflex angle is smaller than measure of straight line.
C. Obtuse angle is greater than right angle and also greater than the measure of straight line.
D. Obtuse angle is less than reflex angle.

A
D

B
A

C
C

D
B

Solution

Obtuse angle is less than reflex angle.