Click on 'related links' below. The link will take you to some pictures of rectangles some are squares some are not.

Every non-rectangular parallelogram has. (It's not correct to say that a parallelogram has, because rectangles and squares are parallelograms too.)

Quadrilaterals are things with four sides, like squares, rectangles, diamonds, trapezoids, rhombuses. Anything that doesn't have four sides (an infinite list) is a non-example of a quadrilateral.

No. 1.5^2 = 2.25 is rational.

A chess board has 64 squares - but if you look closely, you can make another square out of every 2x2 (49), 3x3 (49) 4x4 (25) 5x5 (16) 6x6 (9) 7x7 (4) and finally one 8x8 square - so 64 + 49 + 36 + 25 + 16 + 9 + 4 + 1 = 204 squares. If we assume "rectangles" are all other rectangles that are not also squares (it could be argued that a rectangle is a square - in which case you add 204 to the number I compute here), then you can see a whole bunch more. It helps to know that 1 + 2 + 3 + ... + n = n x (n+1) / 2 (speeds up the math) 1 square tall: 2 x 1: 7 per row times 8 rows = 56 3 x 1: 6 per row ... = 48 for a total of (7+6+5+4+3+2+1) x 8 (rows) = 8 x 8 x 7 / 2 = 224 2 squares tall: (7 + 6 + ...) x 7 x 2 = 8 x 7 x 7 / 2 You can see that if we keep going we get 8 x (8 + 7 + 6 + ... + 1) x 7 / 2 = 8 x ( 8 x (8 + 1 ) / 2 ) x 7 / 2 = 2 x 8 x 9 x 7 total number of rectangles = 1008 So the answer is 204 squares and 1008 (non-square) rectangles, or 204 squares and 1212 "rectangles" (including squares).

Not if the rectangles are non-overlapping.

All sorts of figures. The only regular polygons that can tessellate by themselves are triangles, squares and hexagons. Irregular polygons such as rectangles, rhombuses, parallelograms and trapeziums will as well. Regular octagons combined with squares will. Other regular polygons can be combined with appropriate star-shapes to tesselate. There are also Penrose tilings which, although they cover the plane, are non-periodic in the sense that the pattern does not repeat itself if you move along. Finally there are many irregular shapes that will tessellate.

The number line includes all rational numbers but also has irrational ones. It is the REAL number line. The square root of non-perfect squares are on it and pi is also on it and they are not rational.

A polygon is usually defined as a plane figure bounded by straight line segments. Any figure which does not correspond to this definition would be a non-polygon. For example, triangles, rectangles, squares, and even star shapes are called polygons. A circle, semicircle or oval is not a polygon. The have curved boundaries.

That is how it is defined: parallelograms have two sides that have congruent adjacent angles, so that the remaining two sides must be parallel and equal in length. Parallelograms include rectangles (all right angles), squares (all right angles), rhomboids, and rhombi (the latter two have congruent but non-right angles, and a rhombus has 4 equal sides).

For all non-square rectangles. the diagonals do not bisect the interior angles. The diagonals of a square do bisect each other.

1 square . . . 4 sides2 squares . . . 8 sides..5 squares . . . 20 sides

No. A trapezoid must have two parallel sides and two non-parallel sides. A rectangle must have two sets of two parallel sides and all angles of 90o. The two terms are mutually exclusive.

All terminating and repeating numbers are rational.the square root of non perfect squares and pi are irrational.

Ellipses and non-square rectangles have two lines of symmetry.

No. 2.25 is not a perfect square but it is rational.

Most famously, an imaginary number, that is, a number whose square (which is the number multiplied by itself) is negative. All real numbers have positive squares. A complex number, is a number which is the sum of a real number and an imaginary number, and so is also a non-real number.

Well, the basic idea is that every positive number is the square of some number. For example, 2 is the square of a number known as the square root of 2; 3 is the square of a number known as the square root of 3; etc. The "perfect squares" are the squares of integers. That would make all other numbers "non-perfect squares", though this term is not usually used in practice.

yes. A rectangle is any 4 sided 2 shape, while a square is a 4 sided shape with equal sides. A square is a rectangle, but a rectangle is not a square. * * * * * The above answer does not address the question that was asked. Technically, squares are a proper subset of rectangles. In that respect, any square is a rectangle as well and so the answer to the question is yes. However, if considering squares and non-square rectangles, the answer is no. The previous answer is not correct, however. A rectangle is NOT any 4 sided 2 shape. A rectangle must have four right angles and two pairs of equal opposite sides.

No. All non-metals are not non-magnetic. just like hydrogen which is a non-metal but it is a diamagnetic... another example of oxygen, which is a non-metal but it is paramagnetic... and there are alot of non-metals which are magnetic also..

All non-even numbers are odd. All squares of even numbers are even. All squares of odd numbers are odd. Therefore all numbers which are odd and not the square of an odd number are the solution set. It contains: {3, 5, 7, 11, 13, 15, 17, 19, 21, 23, 27, 29, 31, ...}

All of the whole numbers from 1 to 300 are not perfect squares, except for1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, and 289.In addition to the whole numbers not listed above, several of the decimalsand mixed numbers from 1 to 300 are also not perfect squares.

No, a quadrilateral isn't always a trapezoid. One way to consider it is that all trapezoids are quadrilaterals (four-sided shapes), but not all quadrilaterals are trapezoids. Some quadrilaterals are concave quadrilaterals, some are scalene convex quadrilaterals (called trapezoids in the UK), some would be trapezoids, and some would be parallelograms (rectangles, squares, rhomboids, rhombi). If parallelograms are considered a special case of trapezoids, then trapezoids would include all non-scalene convex quadrilaterals, which is a highly inclusive definition.

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