This truth and lies worksheet covers the law of sin ambiguous case. Students will have to decide if each triangle listed creates 0, 1, or 2 triangles. Students are to circle the statements that are true. When they have completed the worksheet, they check with the teacher. The teacher just checks the boxes that have all the correct triangles circled. Then students need to correct any boxes not checked. This forces them to check their work and not just change their answers.