Look at the two polygons below.

Polygon 1 has 7 sides of different lengths and all obtuse angles. Polygon 2 has 5 sides with one acute angles and four obtuse angles.

Which polygon is concave?

Polygon 2

Both Polygon 1 and Polygon 2

Neither Polygon 1 nor Polygon 2

Polygon 1

Question

Look at the two polygons below. 
  
Polygon 1 has 7 sides of different lengths and all obtuse angles.  Polygon 2 has 5 sides with one acute angles and four obtuse angles. 
  
Which polygon is concave?

Polygon 2

Both Polygon 1 and Polygon 2

Neither Polygon 1 nor Polygon 2

Polygon 1

anonymous · Answer

attachment

anonymous · Answer

@amistre64  (Moderator)

amistre64 · Answer

when i hear the word conCAVE,  i think of something that is dented .....

does either of the shapes look dented?

amistre64 · Answer

if they have an inside angle that is bigger than 180, they start to look dented, caved in

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amistre64 · Answer

if you draw a line thru each of the vertexes; if it looks like one of themis pointing into the shape, its concave

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