Question

in ABCD rectangle angleB+ angle D​

Answer 1

Answer:

in a rectangle all the angles are of 90°

so

the sum of any two angles will be 180°

Hence, angle b+angled=180°

Answer 2

Answer:

take a glass of water pour the substance given below and stir them properly after that obseve the glass properly and classify soluble and insoluble substance on the basis of observation