Q1)
Ans: The statement: ‘A square is a rhombus but a rhombus is not a square’ is correct. A rhombus is a parallelogram with 4 equal sides but the angles inside the rhombus need not all be equal. A square is a type of rhombus that has equal angles inside of the square. So a square can be a rhombus but a rhombus can’t be a square.
Q2)
Ans: D, all of the above statements are correct. A quadrilateral is a shape with 4 sides. Both a square and parallelogram have 4 sides so they are quadrilaterals, statement A is therefore correct. A parallelogram is a quadrilateral which has two sets of parallel lines opposite each other and a square is a type of parallelogram so statement B is correct. A trapezoid is a quadrilateral with only one pair of parallel lines so statement C is correct.
Q4)
Ans: I disagree with the statement. A square is a type of parallelogram with 4 equal sides and 4 equal inner angles. A quadrilateral need not have 4 equal sides and 4 equal inner angles to be a parallelogram. So the statement is wrong.
Rayner Tan(21)
S1-09
Entry #18
ReplyDeletethanks Rayner
hi Rayner! your Q1 has a great explanation, but iti is not somewhat correct-is not accurate as a square is a rhombus but need not say a rhombus need not be a square. A rhombus is only 1 type of square like how a square is only 1 type of a parallelogram.The rhombus, like the square both have equal lengths fro 1 side, both are parallel to its opposite side, but a square has a right angle on every side, but the rhombus need not have right angles on every side so a rhombus can be a tinted square.a rhombus has the same characteristics as a square, so it can be in the square family too
ReplyDeleteHi Rayner, Jasper Here! Your Q1 has a perfect explanation. But you might want to add in why the rhombus cannot be a square.
ReplyDeleteLike :
"On the other hand, all rhombus might not have equal angles [90º] in it."
Thanks Rayner! Cheers!