Math - True (T) & False (F)

III. Answer True (T) or False (F): (1×10=10 marks)

i) Area of four walls of a room = Perimeter of floor × Height of wall. [    ]

ii) Every square is a rhombus. [ ]

iii) (a-b) (a+b) is a binomial. [ ]

iv) (x-3) is a factor of x2+2x-15. [ ]

v) Diagonals of rectangle are perpendicular to each other. [ ]

vi) The successor of -1 is a natural number. [ ]

vii) The ratio 2:5 is the same as the ratio 5:2.  [ ]

viii) The minimum number of sides that a polygon can have is two. [ ]

ix)The letter S has a horizontal line of symmetry. [ ]

x) 182˚ is a reflex angle. [ ]