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Understanding Quadrilaterals Test - 9

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Understanding Quadrilaterals Test - 9
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  • Question 1
    1 / -0
    Convex polygon does not have portions of their diagonals in their ................. .
    Solution
    Diagonals are which join two opposite vertices. A polygon is a closed figure, so their diagonals do not extend in their exterior. Such figures are convex polygon.
    Therefore, A is the correct answer.
  • Question 2
    1 / -0
    If each angle of a polygon is less than $$180^o$$ then it is called a ____ polygon.
    Solution
    All the diagonals are in the interiors of the polygons because each angle is less than $$180^o$$. So, It has no reflex angle.
    Therefore, C is the correct answer.
  • Question 3
    1 / -0
    Polygons that have no portions of their diagonals in their exterior are called as?
    Solution
    Polygons that have no portions of their diagonals in their exterior are called convex polygons.
  • Question 4
    1 / -0
    The diagonals of a convex polygon are always in the ______ of the polygon.
    Solution
    The angles are less than $$180^o$$ and the vertices of a polygon with points outward. While joining two vertices they will move inwards i.e the diagonal.
    Therefore, A is the correct answer.
  • Question 5
    1 / -0
    The vertices of a convex polygon point are .....................
    Solution
    As the angles of a convex polygon are less than $$180^o$$, the vertices points outwards.
    Therefore, A is the correct answer.
  • Question 6
    1 / -0
    In a parallelogram two angles given are $$80^o$$ & $$100^o$$. They are ................angles.
    Solution
    Adjacent angles are supplementary i.e $$180^o$$.
    Opposite angles are equal, so they can be only adjacent angles.
    Therefore, C is the correct answer.
  • Question 7
    1 / -0
    Polygons that have at least one of their diagonals in their exterior are called :
    Solution
    Polygons that have at least one of their diagonals in their exterior are called concave polygons.

    So, option C is correct.
  • Question 8
    1 / -0
    A parallelogram is a quadrilateral whose ...................... sides are parallel.
    Solution
    A parallelogram is a quadrilateral which has $$4$$ sides whose opposite sides are equal and parallel. It has $$2$$ pairs of parallel and equal sides.
    Therefore, C is the correct answer.
  • Question 9
    1 / -0
    A polygon with at least one .................. angle is called concave polygon.
    Solution
    A polygon having at least 1 angle more than $$180^o$$ and vertices pointing inwards is called a concave polygon.
    Therefore, C is the correct answer.
  • Question 10
    1 / -0
    A concave polygon has .................... interior angles more than $$180^o$$.
    Solution
    All angles less than $$180^o$$ is a convex polygon. Convex is opposite of concave, so at least one angle has to be more than $$180^o$$ to be a concave polygon.
    Therefore, C is the correct answer.
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