Question

show that the points (3,3),(7,1),(4,0)and(6,4)are concyclic ​

Answer 1

Answer:

Proving Concyclic Points

Finding the product of the lengths of the diagonals of the quadrilateral formed by the points.

Finding the sum of the products of the measures of the pairs of opposite sides of the quadrilateral formed by the points.

If these two values are equal, the points are concyclic.

Answer 2

Answer:

(i) Environmental aspects must be carefully looked into before building

huge dams.

(11) Most industries are concentrated around coal mines.

(1) Petroleum is referred to as “black gold”.

(iv) Quarrying can become a major environmental concern.

Distinguish between the followings.

(i) Conventional and non conventional sources of energy

(ii) Biogas and natural gas

(iii) Ferrous and nonferrous minerals

(iv) Metallic and nonmetallic minerals