I had the chance to tutor a student for the state contractor's exam. Geometry concepts are essential for builders. Topics covered include circles, triangles, area, perimeter, pythagoras theorem, congruent triangles, cylinders and spheres. Other topics covered include trigonometry questions like sine, cosine and tangent applications. Geometry concepts are also used to apply to roofing. Other topics covered include scaling and calculation of bidding price and percentages. Cost analysis and actors scaling factors are also covered. Topics like Pitch, Rise and Span are also covered. All basic angle topics were also covered, including supplementary angles and angles at a point.