Question

please answer it fast ​

Answer 1

Answer:

∠PAC = ∠ABC + ∠ACD

∠PAC = 2∠ACD (  AS ∠ABC=∠ACD) ....1

PAD = 1/2∠PAC ....2

∠PAD = ∠ACD    (USING 1 IN 2)

THUS, AD║BC

ALSO, AB║CD THUS ABCD IS PARALLELORGRAM

Step-by-step explanation:

Answer 2

Answer:

Economic activities are those by which we can earn our livelihood. Business is an example of an economic activity. Business may be defined as an economic activity involving the production and sale of goods and services undertaken with a motive of earning profit by satisfying human needs in society.