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106.
(1, 8) and (2, 7)
(1, 2) and (7, 8)
(2,6) and (1, 5)
(1, 5) and (7, 3)
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107.
60°
20°
30°
40°
108. Which of the follOwing statements is incorrect?
The angle subtended by a chord of a circle at the centre is equal to the angle subtended by the chord at any point of the circumference of a circle.
The lengths of the chords situated at equal distance from the centre of a circle are equal.
The angles subtended by a chord at different points on the circumference of a circle are equal.
The perpendicular drawn from the centre of a circle on a chord, bisects the chord.
109.
20 cm.
10 sq cm.
20√2 cm.
20 sq cm.
110. Heron's formula for the area of a triangle with sides of lengths a, b, c and s =(a + b + c)/2, is
abc
√{ s (s - a) (s - b) (s - c)}
√{(s - a) (s - b) (s - c)}
1/2 x base x height
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