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Segment Products and Power of a Point: Practice

12 multiple-choice questions, progressively harder.

Level 3 · Challenge 0 / 12 answered
Question 1 of 12
  1. 1

    Secants have orders P,A,BP,A,B and P,C,DP,C,D. The lengths PA,AB,PC,PDPA,AB,PC,PD are x,x+6,4,27x,x+6,4,27, respectively. Here xx itself is a length. Find xx.

    Two secants have orders P, A, B and P, C, D.Two secants have orders P, A, B and P, C, D. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.PABCDSchematic; use the stated lengths.
    Answer choices for question 1
  2. 2

    A tangent from PP has length x+3x+3. A secant has external length xx and inside chord length 1515. Find the valid xx.

    PT is tangent at its actual contact T. The secant has order P, A, B.PT is tangent at its actual contact T. The secant has order P, A, B. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.PABTSchematic; use the stated lengths.
    Answer choices for question 2
  3. 3

    Chords have orders A,P,BA,P,B and C,P,DC,P,D. Their lengths are x+6x+6, 6−x6-x, 55, and 77, respectively. Here xx is a parameter. Which gives every valid xx?

    Chords have orders A, P, B and C, P, D inside one circle.Chords have orders A, P, B and C, P, D inside one circle. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.ABCDPSchematic; use the stated lengths.
    Answer choices for question 3
  4. 4

    A circle has radius 1313 and OPOP is 55. A chord through PP has PAPA of 99. Find PBPB.

    Chords have orders A, P, B and C, P, D inside one circle.Chords have orders A, P, B and C, P, D inside one circle. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.ABCDPSchematic; use the stated lengths.
    Answer choices for question 4
  5. 5

    An external point has signed power 9191 and center distance 1010. Find the diameter of the circle.

    Answer choices for question 5
  6. 6

    Chord ABAB has length 1414 and contains interior PP. Write PA=xPA=x, so PBPB is 14−x14-x. Another chord through PP has parts 44 and 1010. Which lists every possible PAPA?

    Chords have orders A, P, B and C, P, D inside one circle.Chords have orders A, P, B and C, P, D inside one circle. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.ABCDPSchematic; use the stated lengths.
    Answer choices for question 6
  7. 7

    Secants have orders P,A,BP,A,B and P,C,DP,C,D. The lengths PA,PB,PC,CDPA,PB,PC,CD are 2,18,3,92,18,3,9. A tangent from PP touches at TT. Which pair gives ABAB and PTPT?

    The secant orders are P, A, B and P, C, D. Segment PT is tangent at T.The secant orders are P, A, B and P, C, D. Segment PT is tangent at T. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.PABCDTSchematic; use the stated lengths.
    Answer choices for question 7
  8. 8

    From △PTA∼△PBT\triangle PTA\sim\triangle PBT, which proportion directly gives the tangent-secant product for a general configuration?

    PT is tangent at its actual contact T. The secant has order P, A, B. Join TA and TB to compare triangles PTA and PBT.PT is tangent at its actual contact T. The secant has order P, A, B. Join TA and TB to compare triangles PTA and PBT. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.PABTSchematic; use the stated lengths.
    Answer choices for question 8
  9. 9

    A point PP is 55 units from the center of a circle and has signed power −50-50. Find the radius.

    Answer choices for question 9
  10. 10

    A diameter lies on a secant ray in order P,A,O,BP,A,O,B, where OO is the center. The lengths PA,PBPA,PB are 7,197,19. Find OPOP.

    Answer choices for question 10
  11. 11

    A secant from external PP has near and far lengths x+2x+2 and x+9x+9. Its tangent segment has length 2152\sqrt{15}. Here xx is a parameter. Find the valid xx.

    PT is tangent at its actual contact T. The secant has order P, A, B.PT is tangent at its actual contact T. The secant has order P, A, B. This schematic preserves incidence and endpoint order. Use the lengths in the statement, not the proportions drawn.PABTSchematic; use the stated lengths.
    Answer choices for question 11
  12. 12

    A circle has radius 85\sqrt{85}. An interior point PP has center distance 66. An exterior point QQ has center distance 1111. Which pair gives the positive chord-part product at PP and a tangent length from QQ?

    Answer choices for question 12