Geometry Ch. 7-9

What is the fomula for area of a rectangle?

• Area = length + width
• Area = 2 × (length + width)
• Area = length × width
• Area = length ÷ width

What is the formula for area of a square?

• Area = s + s
• Area = 4s
• Area = 2s
• Area = s^2

What is the area formula of a triangle?

• Area = 2 * base * height
• Area = base * height
• Area = 1/2 * base * height
• Area = base + height

What is the area formula of a parallelogram?

• Area = base × height
• Area = base + height
• Area = 2 × (base + height)
• Area = length × width

What is the area formula of a trapezoid?

• Area = (1/2) (height)(base1 + base2)

• Area = base1 * base2 * height
• Area = (base1 + base2) * height
• Area = (1/2) * (base1 - base2) * height

What is the area formula of regular polygon (pentagon, hexagon, octagon, etc.)?

• Area = (1/4) * n * s^2 / tan(π/n)
• Area = (1/2)(apothem)(perimeter of the base)

• Area = n * s^2
• Area = n * s * h

What is the formula of the length of an arc?

• L = r + θ
• L = r / θ
• L = (θ/360)2πr

• L = r * θ

What is the formula to use if two secants intersect INSIDE the circle?

• AP + PB = CP + PD
• Angle = 1/2(Arc1 + Arc2)

• AP / PB = CP / PD
• Angle = 1/2(Arc1 - Arc2)

Which formula should be used if a radius and a tangent intersect ON the circle?

• Chord Length Formula
• Angle = 1/4(Arc)

• Angle = 1/2(Arc)

• Circle Area Formula

What formula should be used if two tangents intersect OUTSIDE the circle?

• Angle = 1/2 (Larger Arc - Smaller Arc)

• Length of tangent = 2r
• Length of tangent = d - r
• Length of tangent = d + r