1. sum of all angles of triangle... i wrote 360 (it is 180 )

2. Parralel line meet at ...need answer

3. cute root of 3 is... i wrote 18 (it is 27)

4. angle bw x and xy ... need answer

5. right angle of a circle is... need answer

6. . if a.b, c.d, the b and c are called ..mean (am i correct)