Answer:
1. isosceles and acute
2. Scalene and acute
3. Equilateral and equiangular
4. Right (and isosceles ?)
(not sure ab isosceles for the last one but everything else is fine)
:)
X will equals -5 because 2-(-5)=3
6/10 and 13/20, sorry i would explain this but its late, cheers.
Hope this Helps.
The answer would be 46,47,48,49