Polygons and Symmetry 2

Question

12345.1 and 5.2

satis · Answer

A line of symmetry is line of the folding of shape so that the folded part sits perfectly on top with all edges matching. 
  
The regular pentagon has 5 sides and 5 edges. Each line drawn  through the edge to the middle of the opposite side is a line of symmetry of the polygon,
  Only line ‘g’ through E and F makes the hexagon so that one part fis to the other part  perfectly.
  Only equilateral triangle as 3 edges and 3 equal measure sides from the given options.
  From the give options only trapezoid can form a mirror image if a line of symmetry is drawn through the midpoints of the parallel sides.
  
So a regular pentagon has 5 lines of symmetry.
  
 
  
So, Line g is the line of symmetry of the given regular polygon.   
 
  
Thus, equilateral triangle has exactly three lines of symmetry.
  
 
  
Thus trapezoid has reflection symmetry.

summoremath2 · Answer

Please find the handwritten solution attached below.

ultrarunner33 · Answer

1. 5 Each pint represents where it can directly be folded in half. always imagine that you can fold it in half like a piece of paper. If it cannot exactly line up perfectly it is not a line of symmetry.2. Line g which connects line segments E to B3. equilateral triangle with all sides being equal each point represents a line of symmetry just like the pentagon4. What would typically appear as c)'s spot on a MC test would have reflection symmetry test5. B's MC test spot or the one that looks a little like an hour glass again if you have to literally stick a mirror next to it and you'll see it.

kpraveer · Answer

For regular polygon, lines of symmetry = number of sides1) 52) line g, that's the axis around which it can be rotated to give identical shape.3) Equilateral triangle4) Last one, the parallelogram, it will look the same in the mirror.5) Second one, it will look the same in the mirror.

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Polygons and Symmetry 2

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