Question

plss solve these all questions its urgent I need help plss help me guys ​

Answer 1

Answer:

Sorry I know only one Question.

Step-by-step explanation:

8)  A(1,-2) , B(3,0) , C(1,2) , D(-1,0)

By distance formula,

AB = √(3-1)²+(0+2)² =√(2)²+(2)² = √4+4 = √16 = 4

BC = √(1-3)²+(2-0)² = √(-2)²+(2)² = √4+4 = √16 = 4

CD = √(-1-1)²+(0-2)² = √(-2)²+(-2)² = √4+4 = √16 = 4

AD = √(1+1)²+(-2+0)² = √(2)²+(-2)² = √4+4 = √16 = 4

Hence square has four sides are equal so,

AB = BC = CD = AD

Therefore, this are the are vertices of the square .

Hence Proved.