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Cemantha

  • 3 years ago

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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  1. dpaInc
    • 3 years ago
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    do you know what concave means?

  2. Cemantha
    • 3 years ago
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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

  3. dpaInc
    • 3 years ago
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    yep...

  4. dpaInc
    • 3 years ago
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    so the remaining angles have total to what?

  5. Cemantha
    • 3 years ago
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    360

  6. dpaInc
    • 3 years ago
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    since two angles are 60 the remaining two have to total to what?

  7. Cemantha
    • 3 years ago
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    180

  8. Cemantha
    • 3 years ago
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    nooo WAIt

  9. Cemantha
    • 3 years ago
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    240

  10. dpaInc
    • 3 years ago
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    no.. the sum of the interior angles in a quadrilateral is 360...

  11. dpaInc
    • 3 years ago
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    yes... 240

  12. Cemantha
    • 3 years ago
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    whoot whoot im smart lol

  13. Cemantha
    • 3 years ago
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    thanks you .

  14. Cemantha
    • 3 years ago
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    your fixing my brain=) & i think its the 2nd one

  15. Cemantha
    • 3 years ago
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    100 & 140

  16. dpaInc
    • 3 years ago
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    can you draw a 4 sided figure thats concave and have those angles?

  17. Cemantha
    • 3 years ago
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    ummmmm..... no? i thnk

  18. dpaInc
    • 3 years ago
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    i don't think so either... so it's not that one...

  19. Cemantha
    • 3 years ago
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    so its the first one 30 & 210

  20. Cemantha
    • 3 years ago
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    si its the third one .

  21. Cemantha
    • 3 years ago
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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

  22. dpaInc
    • 3 years ago
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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... :)

  23. Cemantha
    • 3 years ago
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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.

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