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Subject :IMO    Class : Class 5

How many of the given figures have perpendicular lines?



A 1
B 2
C 3
D 4


How come D has even 1 pair of perpendicular lines ??????????????????????????????????????????????????????

Ans 1:

Class : Class 7
D is the answer to this question because all the lines are perpendicular and in the 3rd one the bottom lines are perpendicular

Ans 2:

Class : Class 5
The answer should be C because in the first figure there are prependicular lines in the bottom in figure 2 there are prependicular lines all four sides near the arrows and in figure 3 there are prependicular lines at the bottom while there are no prependicular lines in figure 4 as they are all acute and obtuse angles so, the answer should be C not D.

Ans 3:

Class : Class 8

Ans 4:

Class : Class 5
D cannot be the answer at all.

Ans 5:

Class : Class 5

Ans 6:

Class : Class 8
i also got it wrong

Ans 7:

Class : Class 3
C

Ans 8:

Class : Class 5
'c' = correct

Ans 9:

Class : Class 4

Ans 10:

Class : Class 5
Angles consideration is confusing ....sometime inner and sometime outer angle is consider ....actually SINGLE LINE FIGURE SHOULD BE GIVEN

Ans 11:

Class : Class 8

Ans 12:

Class : Class 8
All 4 figure has perpendicular line along perimeter

Ans 13:

Class : Class 7
Something is wrong here. We have to confirm about it.

Ans 14:

Class : Class 7

Ans 15:

Class : Class 5

Ans 16:

Class : Class 7
It should be C as it is written that we have to find the perpendicular line for each figure, so there are three figures with perpendicular line but if we consider how many perpendicular lines are there in this picture then it should be 4. This answer is absolutely wrong.

Ans 17:

Class : Class 8
But what about the curved arrow

Ans 18:

Class : Class 6

Ans 19:

Class : Class 4
yes

Ans 20:

Class : Class 8

Ans 21:

Class : Class 5
it should be a. thats what my supery dupery expert dad said

Ans 22:

Class : Class 5
A perpendicular line is 90 degrees, last one doesn't count as 90 degrees, so C

Ans 23:

Class : Class 6
it is d

Ans 24:

Class : Class 6
how

Ans 25:

Class : Class 8
All figures have perpendicular lines

Ans 26:

Class : Class 7
CONFUSING QUESTION

Ans 27:

Class : Class 5
How

Ans 28:

Class : Class 6
It is c

Ans 29:

Class : Class 4

Ans 30:

Class : Class 8

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