Question

pls give me full answer ​

Answer 1

Answer:

answer a is correct

Step-by-step explanation:

20 ^2 =16^2+12^2

400. =400

hence it is a right angled triangle

Answer 2

Answer:

a) 20,16,12

12^2 + 16^2

= 144 + 256

= 400

= 20^2

hence

12^2 + 16^2 = 20^2

so ,these sides form right angle triangle.

b) 11,12,16

11^2 + 12^2

= 121 + 144

= 265

16^2 = 256

so

11^2 + 12^2 is not equal to 16^2

so these sides do not form right angle triangle