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What shapes don't have lines of symmetry?
Ovals; circles; any circular shape with no edges or corners
What is a set of parallel cross-sections are congruent rectangles?
That's a statement that can apply to any rectangular prism.
What is a eight figure?
A 'figure eight' is any shape that loosely, or closely, resembles the shape of 8 - in other words, two conjoined circles, or ovals.
Why are manholes in circles and not in square or rectangle?
They can be any shape ! We have square and rectangular ones in my town (and there's at least a couple of triangular ones too !)
What is the cross-sectional area of a 3D shape all about - explained simply as possible please?
You have a 3-d shape. If you slice of a part of it with a very very sharp instrument (a sharp sword or a laser, for example) the cross section is the shape of the newly cut surface. So, if you start with a sphere, any section will be a circle. Of different sizes depending on how high or low you cut, but they'll all be circles. If you have a cone, a dead vertical cut, through its apex (top point) will be a triangle. But as you move off the apex, you will get a parabola. Cut is horizontally, though, and you will get circles - ncreasing in size as you move further from the apex. Cut it at a slight slant and you will get ellipses (ovals). And so on.
What is a close shape?
A closed shape is any shape that surrounds an area. This includes polygons (triangles etc.) circles, ovals and any irregular shape
Smallest number of corners of any shape?
0, since there are circles and ovals
What shapes don't have lines of symmetry?
Ovals; circles; any circular shape with no edges or corners
What is a set of parallel cross-sections are congruent rectangles?
That's a statement that can apply to any rectangular prism.
Do we need to use circles and rectangles in venn diagram?
No, the sets and subsets can be any shape, but circles and rectangles are neater. Also, circles or rectangles will usually intersect in only one part whereas very wriggly shapes can have multiple intersections.
What is a eight figure?
A 'figure eight' is any shape that loosely, or closely, resembles the shape of 8 - in other words, two conjoined circles, or ovals.
Who is the worst mathematician?
Matthew Rupen. He spent three years of research to conclude that circles have the least sides of any visible shape.
An acr of a circle cut off by the diameter?
idk i hate math and find no need for circles or any type of shape for that fact
What was the size of jesus cross?
The New Testament does not state the dimensions or the shape of the 'cross' used for the Crucifixion. Was it a 'T' or 't' shape? Was it just the top cross section to be nailed to a stationary pole or tree?? No one knows and any answer is pure speculation.
What shapes are not polygons?
any shape that is closed and has no round sides, triangles, squares, pentagons, hexagons, heptagons, octagons, nonagons...
Why are manholes in circles and not in square or rectangle?
They can be any shape ! We have square and rectangular ones in my town (and there's at least a couple of triangular ones too !)
What is the cross-sectional area of a 3D shape all about - explained simply as possible please?
You have a 3-d shape. If you slice of a part of it with a very very sharp instrument (a sharp sword or a laser, for example) the cross section is the shape of the newly cut surface. So, if you start with a sphere, any section will be a circle. Of different sizes depending on how high or low you cut, but they'll all be circles. If you have a cone, a dead vertical cut, through its apex (top point) will be a triangle. But as you move off the apex, you will get a parabola. Cut is horizontally, though, and you will get circles - ncreasing in size as you move further from the apex. Cut it at a slight slant and you will get ellipses (ovals). And so on.
