Answer: The figure would be trapezoid or trapezium.
Explanation:
Since we have given that
Dimensions of a quadrilateral are 12 cm , 10 cm, 10 cm, and 5 cm.
And the side that measures 12 cm is parallel to the side measures 5 cm.
So, it has two parallel sides in which one side is longer than the other side.
So, it will form a trapezium or trapezoid.
Hence, the figure would be trapezoid or trapezium.