Qualification > Math

IGCSE MATHS Doubts

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thenewkid™:
gd luck 2 every1. inshallah the exam will be easy.

Mr.DitD:
So will they EVER cut marks for additional decimals!?!?!
Cuz sometimes u need to use the previous value for getting the next answer and ur answer will be different when you use 3.56 instead of 3.6 or 3!

Ghost Of Highbury:

--- Quote from: Ari Ben Canaan on May 11, 2010, 05:24:37 pm ---I remember our teacher giving a horrible explanation about how all rhombuses are squares bla blah


AND


that some parallelograms can be rectangles or soemthing along those lines.

Can someone please please explain this..

--- End quote ---

ANy 4 sided figure is called a quadrilateral.

A quadrilateral with opposite sides are parallel and equal in length, and opposite angles equal is called a parallelogram

A parallelogram with 4 right angles and and with congruent diagonals is called a rectangle.

A rhombus is a four-sided shape where all sides have equal length.

Also opposite sides are parallel and opposite angles are equal.

The diagonals of a rhombus bisect each other at right angles.

Fastal:

--- Quote from: A@di on May 11, 2010, 05:33:17 pm ---ANy 4 sided figure is called a quadrilateral.

A quadrilateral with opposite sides are parallel and equal in length, and opposite angles equal is called a parallelogram

A parallelogram with 4 right angles and and with congruent diagonals is called a rectangle.

A rhombus is a four-sided shape where all sides have equal length.

Also opposite sides are parallel and opposite angles are equal.

The diagonals of a rhombus bisect each other at right angles. (thats wat makes it different from a square)



--- End quote ---


but a square is a rhombus

haris94:
question 21 b) please

and can u tell me what is a plane symmetry
and if u hv seen any other questions with plane symmetry in the past papers pls tell me

Thank You

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