مجال المحتوى
الهندسة وحساب المثلثات.
تمثل الهندسة وحساب المثلثات ما يقرب من 15٪ من SAT الرقمي.
المواضيع الفرعية
Area and volume
Area of triangles, rectangles, circles, trapezoids. Volume of boxes, cylinders, cones, and spheres.
Lines, angles, and triangles
Parallel lines cut by a transversal, angle sum in triangles, similar and congruent triangles.
Right triangle trigonometry
SOH-CAH-TOA, 30-60-90 and 45-45-90 special triangles, the Pythagorean theorem.
Circles
Circumference, area, arc length, sector area, central angles, and inscribed angles.
Coordinate geometry
Distance and midpoint formulas, the equation of a circle, parabolas in the coordinate plane.
المعادلات الأساسية
a² + b² = c² (Pythagorean theorem)A = ½bh (area of a triangle)A = πr² (area of a circle)C = 2πr (circumference)L = (θ/360) × 2πr (arc length)V = πr²h (volume of a cylinder)sin θ = opp/hyp, cos θ = adj/hyp, tan θ = opp/adjنصائح الاختبار
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Draw and label diagrams for every geometry problem.
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Memorize 30-60-90 and 45-45-90 ratios; they appear in nearly every test.
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Arc length and sector area are proportional to the central angle divided by 360.
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For right-triangle trig, correctly identify opposite, adjacent, and hypotenuse relative to the reference angle.