Math's project work
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Transcript of Math's project work
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Math's Project Work Maths is not about numbers ,
equations , algorithms ; its about understanding…………………
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Visualizing Solid Shapes
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Contents2-dimensional shapes and their properties3-dimensional shapes and their properties MapsWhat do colors represent on mapDifferent views of 3-d & isometric shapesQuiz...
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2-Dimensional Shapes Two-dimensional shapes have no thickness,
but they do have two measures of distance associated with them, such as width and height. They can be drawn on a flat surface.
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2-Dimensional Shapes The dimensions of a two-dimensional shape
are used to derive or calculate the object's area. Because two-dimensional shapes have no thickness or depth, there is no notion of volume associated with them.
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2-Dimensional Shapes Some examples of two-dimensional shapes
are rectangles, circles, triangles, hexagons, trapezoids and quadrilaterals
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Properties of 2d shapes These shapes are flat and can only be
drawn on paper.
They have two dimensions – length and width.
They are sometimes called plane shapes. One of the lines that make a flat (2-dimensional) shape.
The amount of turn between two straight lines that have a common end point (the vertex).
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3-Dimensional Shapes Single-dimensional shapes exist only
in one dimension, which means that they only possess length.
Two-dimensional shapes have two dimensions, including length and width. These shapes are always flat.
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3-Dimensional Shapes By adding an additional dimension to
2-D shapes, many 3-D shapes can be constructed, such as cubes, pyramids and spheres.
The mathematical term for a solid 3-D shape is "polyhedron."
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Properties of 3d shapes These shapes are solid or hollow. They have three dimensions – length,
width and height. Faces-Part of a shape that is flat.(Or curved) Edge-The line where two faces meet. vertex-The place where three or more
edges meet. Parallel - These type of lines stay the same
distance apart for their whole length. They do not need to be straight or the same length.
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Map A map is a graphical representation of a
portion of earth’s surface drawn to scale as seen from above.
It uses color ,symbols, scale and labels to represent features found on ground.
The job of a map is to describe spatial relationships of specific features that the map aims to represent.
There are many different types of maps that attempt to represent specific things
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What do colors represents on a
map ? Blue – water (streams, lakes, permanent snow fields and glaciers, etc.)
Green – forest and vegetation White – a general lack of vegetation Brown – contour lines (elevation information) Black – man-made/cultural features (buildings, place
names, boundary lines, roads, etc.) Red – Highways and major roads,
Township/Range/Section information Pink – urban areas Purple – reflect revisions to a map but is no longer
used on maps in production
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Views of 3-D shapes
Side view
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Views of 3-D shapes
Top view
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Views of 3-D shapes
Front view
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Different views of a Isometric shape
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1. a 3d shape is ______.
Solid flat small none of these
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2. A 2d shape is ________.
Solid flat small none of these
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3. 2d shapes can be drawn on ________.
WoodGlassMetalPaper
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4. Map is a __________.
Pictorial representationMathematical problemGraphical representationScientific term
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5. What black represents on a map?
River Canals highwaysman made features
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6. What red represents on a map?
River Canals highwaysman made features
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7. What blue represents on a map?
STREAMSROADS highwaysman made features
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8. What pink represents on a map?
River CanalsUrban areasman made features
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Made by-Name-anjaliClass-viii-’a’Roll.no-8102