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Answer 1

Answer:

4.

i) 150°

ii) 90°

5.

i) a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star.

ii) two or more objects are said to be concentric, coaxal, or coaxial when they share the same center or axis.

iii) A chord of a circle is a straight line segment whose endpoints both lie on the circle.

6. and 7. in the figure.......

Step-by-step explanation:

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