Let the base angle be x. If the obtuse angle is two and a half times the base angle, it will be 2.5x. In a triangle, all three angles will add up to 180. The third angle, the other base angle will be equal to x. So the equation will be:
x + x + 2.5x = 180
2x + 2.5x = 180
4.5x = 180
x = 40
If x = 40, then 2.5x = 100
A kite is a quadrilateral.
So the correct answer is A.
Hope this helps,
Davinia.
Answer is c (there is not a enough info given)
It would equal 0.75 and as a fraction it is 3/4
