Subject

    মানসিক দক্ষতা

    Topic

    চিত্রভিত্তিক প্রশ্ন

    What is the value of the internal angle of an octagon?

    ক)
    1500
    খ)
    1700
    গ)
    1350
    ঘ)
    1650

    Explanation

    The value of the circle shown in the middle is 360 0 . The value of each segment is therefore 45 0 (360÷8); the remaining angles, therefore, are equal to 180-45 = 135 or 67.5 0 each (180 0 being the sum of the internal angles of a triangle); each internal angle is therefore 135 0 .

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