Question

true and false with reason
std 9 maths ​

Answer 1

Answer:

1. t

2. t

3. t

4. f

Step-by-step explanation:

mark my answer brainliest

Answer 2

Answer:

1)true

2)false

3) false

4)true

Step-by-step explanation:

1)because a/c to the einstein theory of general relativity physical space itself is not euclidean.

2)because the boundaries of solid are represented of the surfaces are represented as curves.

3)Because the edges of surfaces are lines.

4)the things which are double of the same thing are equal to one another.