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Answer:
Q1.
(b) 135°
(ii) (c) 3
(iii) (a) 40°
(iv) (d) 0°
(v) (c) 45°
Q2.
(i) equal
(ii) center
(iii) 110°
Step-by-step explanation:
Q1.
(i) Fourth angle = (360 - 3(75)) = (b) 135°
(ii) We know that, the sum of all the angles of a quadrilateral is 360. An obtuse angle is greater than 90 and less than 180. Thus, atmost 3 angles of a quadrilateral can be obtuse.
(iii) The angles would be equal.
(iv) Opposite angles are equal in a parallelogram.
(v) Diagonal would bisect the angle. Each angle of a square measures 90°, so angle bisected would become 45°.
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