If you can tell me the or describe the specific task (e.g., "finding the area of a trapezoid with bases 4 and 6"), I can walk you through the step-by-step solution right now.

Calculating the area of triangles, trapezoids, and polygons.

Most geometry errors come from mislabeling the diagram.

Properties of parallelograms, rectangles, rhombuses, and squares.

Domogatskikh’s workbooks usually have a solved example at the start of each section.