Question 1038848
The angles will have the same measure.
After dilation, the shape is the same, and the angles are congruent.
The length of the sides increases by a factor of 1.5.
If the angle measures were 1.5 times larger, the sum of the angles of the dilated triangle would be
{{{1.5(180^o)=270^o}}} ,
but you know that the sum of the measures of the angles of a triangle is {{{180^o}}} ,
for any triangle, no matter how large the triangle is.