Answer:
![\boxed {\boxed {\sf Isosceles \ triangle}}](https://img.qammunity.org/2021/formulas/mathematics/high-school/gx78oym5mrgsp9sdcdzx1ytyyj72q5f2xr.png)
Explanation:
An equilateral triangle has 3 equal sides and angles.
A right triangle contains one right or 90 degree angle.
An isosceles triangle has 2 equal sides and base angles.
A scalene triangle has no equal sides or angles.
The triangle given has the sides of 5 cm, 5 cm, and 7 cm.
Therefore, 2 of the sides are equal and this must be an isosceles triangle.