what is the meaning of
- A plane surface is one that lies evenly with the straight lines on itself.
- A plane angle is the inclination to each other of two lines in a plane, which meet each other and do not lie in a straight line.
Answer :
1 ) A plane surface is one that lies evenly with the straight lines on itself.
This is the 7th definition of the Euclid's definition .
That states that as we know from the 4th definition " A straight line is a line which lies evenly with the points on itself. " that means line only have one dimension . So from " A plane surface is one that lies evenly with the straight lines on itself. " that plane is 2-dimenstion , As it lies between a straight line amd itself ( 2- dimension ) .
2 ) A plane angle is the inclination to each other of two lines in a plane, which meet each other and do not lie in a straight line.
That is 8th definition of the Euclid's definition .
that states that if two line in a plane and form a angle than they are not a straight to each other . And angle form by can be called as plane angle .
1 ) A plane surface is one that lies evenly with the straight lines on itself.
This is the 7th definition of the Euclid's definition .
That states that as we know from the 4th definition " A straight line is a line which lies evenly with the points on itself. " that means line only have one dimension . So from " A plane surface is one that lies evenly with the straight lines on itself. " that plane is 2-dimenstion , As it lies between a straight line amd itself ( 2- dimension ) .
2 ) A plane angle is the inclination to each other of two lines in a plane, which meet each other and do not lie in a straight line.
That is 8th definition of the Euclid's definition .
that states that if two line in a plane and form a angle than they are not a straight to each other . And angle form by can be called as plane angle .