I want to confirm if I understood .

Question

Problem states : Draw a right triangle with a base of 2 units and a height of 3 units. Make three “copies” so that the lengths of
the new sides are 50%, 300%, and 500% of the original.

Solution:
1st triangle
Base2×0.5= 1 new base will be 2+1=3
Height 3×0.5=1.5 new height 3+1.5=4.5
So new triangle base 3units and height 4.5 units

Second triangle:
2×3=6 so, 6+2=8
3×3=9 so, 3+9=12

New triangle base 8 height 12

Same process for triangle 3.

Answer 1

No, first triangle at 50% would have sides half of the original.

Second would have sides 3 times the original.

Third would have sides 5 times the original.