2014 PSLE Discussions and Strategy

[pm123]

pm123:

dagong99:

Rhombus 3+1


Correct ? :nailbite:

a can use square as rhombus ? Then 1+1.
Acceptable ? :scratchhead:

Any adv here? Since sq is a type of rhombus too, and since the q has for min, the stated ans is 1+1=2

[Trevortan]

pm123:

pm123:

[quote=\"dagong99\"]

Rhombus 3+1


Correct ? :nailbite:

a can use square as rhombus ? Then 1+1.
Acceptable ? :scratchhead:

Any adv here? Since sq is a type of rhombus too, and since the q has for min, the stated ans is 1+1=2[/quote]The tiles given for the drawing were rectangles, not squares... so 2 right-angled triangles add up to a rectangle. Rhombuses have equilateral sides but a rectangle doesn't.

[dagong99]

Trevortan:

GiftedGem:

For Parallelogram, DD said the qn asking smallest no. of triangles used.
Her ans is 2.

(Inclusive of the one drawn)
Parallelogram: 1 + 1
Rhombus: 3 + 1
Trapezium: 2+ 1

Same answer

[dagong99]

Trevortan:

pm123:

[quote=\"pm123\"]

a can use square as rhombus ? Then 1+1.
Acceptable ? :scratchhead:

Any adv here? Since sq is a type of rhombus too, and since the q has for min, the stated ans is 1+1=2

The tiles given for the drawing were rectangles, not squares... so 2 right-angled triangles add up to a rectangle. Rhombuses have equilateral sides but a rectangle doesn't.[/quote]Same explanation as DS2.

[pm123]

dagong99:

Trevortan:

The tiles given for the drawing were rectangles, not squares... so 2 right-angled triangles add up to a rectangle. Rhombuses have equilateral sides but a rectangle doesn't.

Same explanation as DS2.

But the given triangle is isosceles right angle. So if u put one on top of the other, with the longer side joined together, u will get a square. Right ? Wrong ?

[whitecarrotcake]

dagong99:

fairy_tail:

[quote=\"sha\"]Hi parents


My DS said there was a question asking students to draw a parallelogram, trapezium and rhombus with a given triangle.

For the parallelogram and trapezium, how many more triangles must be drawn respectively.

Please help

I'm not so sure

Parallelogram: 8 (inclusive of the one provided)
Rhombus: 4
Trapezium: 3 (including)

Mine is
Parallelogram 1+1
Rhombus 3+1
Trapezium 2+1

Correct ? :nailbite:[/quote]Correct. As they asked for least number of triangles.

[mummyoftwo]

Puzz...zzle:

Hi mummies, I think better not compare answers here at this time. Even compare, best is don't let your dearest dd, ds know their mistakes, cause that might affect their mood or given them more stress for the rest of other papers.

Totally agreed with you...

[Trevortan]

pm123:

dagong99:

[quote=\"Trevortan\"]

The tiles given for the drawing were rectangles, not squares... so 2 right-angled triangles add up to a rectangle. Rhombuses have equilateral sides but a rectangle doesn't.

Same explanation as DS2.

But the given triangle is isosceles right angle. So if u put one on top of the other, with the longer side joined together, u will get a square. Right ? Wrong ?[/quote]How do you get a square when the tiles are rectangles?

[Kangkangteo]

quote=\"pm123\"]

dagong99:

quote=\"fairy_tail\"]quote=\"sha\"]Hi parents


My DS said there was a question asking students to draw a parallelogram, trapezium and rhombus with a given triangle.

For the parallelogram and trapezium, how many more triangles must be drawn respectively.

Please help

I'm not so sure

Parallelogram: 8 (inclusive of the one provided)
Rhombus: 4
Trapezium: 3 (including)[/quote]

Rhombus 3+1


Correct ? :nailbite:[/quote]

a can use square as rhombus ? Then 1+1.
Acceptable ? :scratchhead:[/quote]

A square is both a rectangle and a rhombus, which means that the properties of parallelograms, rectangles, and rhombuses all apply to squares.

Based on th above definition of a square, it looks like the answers for parallelogram, rhombus and trapezium are the same, I.e. 1 + 1.

[Trevortan]

Kangkangteo:

A square is both a rectangle and a rhombus, which means that the properties of parallelograms, rectangles, and rhombuses all apply to squares.

Based on th above definition of a square, it looks like the answers for parallelogram, rhombus and trapezium are the same, I.e. 1 + 1.

Squares are rectangles and rhombuses , but rectangles aren't squares nor rhombuses. The two right-angled triangles in this question don't form a square, but forms a rectangle.