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Bimbleberries · 19/03/2023 12:32
Purplecatshopaholic · 19/03/2023 12:29
And it’s crap like this that makes me glad I did not take Maths further than GCSE level (despite getting an A, and having a Maths Teacher as a mother)! What on earth is the point of learning this?
It's not really about learning this as a fact ,though. And post GCSE maths isn't really much like this.
It's more of a puzzle that lets you apply what you know to a more complicated situation, and that's kind of fun when you see that a simple rule can actually let you do something quite hard like this, and kind of satisfying and fun when you work it out I didn't get it for a while, had to really think, but then I did see it. It wouldn't be something that we'd have ever been taught. The skills of problem solving, though, are generally useful in maths as well as other disciplines, so I can see why they include something like this as a puzzle for year 8
BrowniesnotBlondies · 19/03/2023 14:18
Have used my brains now (ie googled, found on Twitter). I shall not spoil it for others....though I liked someone'e rephrasing
I have a tray of brownies. Someone took a random piece out of the middle. How do I share the rest equally into 2 portions.
Greentree1 · 19/03/2023 16:03
I assume that any line going through the centre point divides a rectangle in half, so the line that goes through the centre point of both rectangles divides both in half.
True for diagonals, verticals and horizontals, and looks right, but not going to try to prove it generally!
SertralineAndTherapy · 19/03/2023 16:07
Greentree1 · 19/03/2023 16:03
I assume that any line going through the centre point divides a rectangle in half, so the line that goes through the centre point of both rectangles divides both in half.
True for diagonals, verticals and horizontals, and looks right, but not going to try to prove it generally!
Not a formal proof, but draw a line through the middle parallel to one pair of sides.. Any other line through the middle will create symmetric shapes above and below that reference line!
TeenDivided · 19/03/2023 16:23
tiredhadenough · 19/03/2023 16:19
I'm confused!!!! Will the answer be shared?
Draw the diagonals on the white rectangle and again on the giant grey rectangle.
Now draw a line that does from one edge to another going through the two points where the diagonals cross.
Any line through the centrepoint of the rectangle splits it in half by area. So you have split both rectangles in half so the grey area is equal on both sides.
I expect someone will draw a picture and upload it in due course.
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