Cemantha
Sarla made a drawing of a geometric figure for a fabric print. The figure was a quadrilateral with a pair of angles measuring 60° each. If the figure she drew is a concave polygon, which of these could be the measures of the other two angles?
30°, 210°
100°, 140°
160°, 80°
20°, 240°
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dpaInc
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do you know what concave means?
Cemantha
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yes a polygon that has at least one vertex pointing toward the center; the measure of the angle created by that vertex will be greater than 180 degrees
dpaInc
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yep...
dpaInc
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so the remaining angles have total to what?
Cemantha
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360
dpaInc
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since two angles are 60 the remaining two have to total to what?
Cemantha
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180
Cemantha
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nooo WAIt
Cemantha
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240
dpaInc
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no.. the sum of the interior angles in a quadrilateral is 360...
dpaInc
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yes... 240
Cemantha
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whoot whoot im smart lol
Cemantha
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thanks you .
Cemantha
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your fixing my brain=) & i think its the 2nd one
Cemantha
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100 & 140
dpaInc
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can you draw a 4 sided figure thats concave and have those angles?
Cemantha
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ummmmm..... no? i thnk
dpaInc
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i don't think so either... so it's not that one...
Cemantha
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so its the first one 30 & 210
Cemantha
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si its the third one .
Cemantha
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ok thnk you very much . i have to go ill ba back wen i get back . thanks super yu were much help
dpaInc
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Sorry @Cemantha, you're answer of 30 & 210 is correct... I was thinking that one of the other angles was already the vertex that concave...
see? remember what you're mom said? trust yourself... :)
Cemantha
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thank you very much . you were much help and luckily i didnt put in the test yet i js left it there while i went to the store.