Subject :IMO Class : Class 7
Which of the following statements is INCORRECT?
A If length of any two sides of a triangle are 7 cm and 10 cm, then length of its third side lies between 3 cm and 17 cm.
B It is possible to construct a unique triangle if all its three angles are given.
C An angle of 
can't be constructed using compasses and ruler.
D None of these
Ans 1:
Class : Class 9
both B and C are correct as angle 7.5 can be constructed using compass and ruler and we cant construct a unique triangle with only 3 angles given.
Ans 2:
Class : Class 5
The option b states that a unique triangle is constructed and it is possible to do so. However option c states that we CANNOT construct the angle 7.5. This is false cause it can be constructed by bisecting an angle of 60, three times.
Ans 3:
Class : Class 8
a is correct (ez)b is INCORRECT (angles can be same but size can vary)c is correct (bisect 60 degrees 3times)answer should be b
Ans 4:
Class : Class 10
Answer is b as the length of sides of triangle are variable and therefore unique triangle cannot be constructed
Ans 5:
Class : Class 8
ya guys the answer is D
Ans 6:
Class : Class 8
Both B and C are wrong, so one of the options definitely needs do be changes. Someone please look into this.
Ans 7:
Class : Class 8
Ans 8:
Class : Class 9
Aditya that is the very reason why it will be a unique triangle and option C is correct since it an angle such as that can be created by bisecting 60 degree three times
Ans 9:
Class : Class 9
Ans 10:
Class : Class 8
answer is D....
Ans 11:
Class : Class 8
I mean B
Ans 12:
Class : Class 9
Ans 13:
Class : Class 7
Ans 14:
Class : Class 8
It is meant to be c
Ans 15:
Class : Class 8
ans is b.i agree with aditya
Ans 16:
Class : Class 7
Ans 17:
Class : Class 10