Answer:
Explanation:
In a parallelogram, when a diagonal is drawn, it divides the parallelogram into two congruent triangles. So, the area of each of these triangles is half of the area of the parallelogram.
Given that the area of parallelogram ABCD is 180 cm², the area of triangle ABC is:
Area of triangle ABC = (1/2) * Area of parallelogram ABCD
Area of triangle ABC = (1/2) * 180 cm²
Area of triangle ABC = 90 cm²
So, the area of triangle ABC is 90 cm².