Video narration
Does your figure look finished, or has it passed every clue? Read clues, make a rough plan, draw known lengths, construct angles, transfer distances with the compass, complete the figure-then verify. Looking right isn't enough. Check all four corners are 90°, and AB = DC; AD = BC. Confirm this figure's DC is 5 cm and DB is 7 cm. Now solve these: With a diagonal-angle clue, what do you construct first? Side 4 cm, diagonal 8 cm-which point could a circle locate? Side 3 cm, diagonal 7 cm-what distance should your compass use? Your figure is finished when every check passes.