Mathematics (Geometry জ্যামিতি)

1) The distance between the parallel sides of a trapezium is called the:

2) If a semicircle has a diameter of 20, what is its perimeter?

3) If opposite angles of a quadrilateral add up to 180 degrees, what can be said about the quadrilateral?

4) The point (0, 0) is known as the:

5) A sector of a circle has a central angle of 60 degrees and a radius of 12 cm. Calculate the perimeter of the sector.

6) What is the name of a 7-sided polygon?

7) What is the sum of the interior angles of a hexagon?

8) The circle in which a cyclic quadrilateral is inscribed is known as what?

9) The diagonals of a rhombus bisect each other at what type of angles?

10) A tangent and a chord intersect at a point on a circle. If the tangent is 12 cm and the chord section is 8 cm, find the radius of the circle.