Lines, Angles, and Triangles

SAT Math· difficulty 3/5

Two similar triangles have corresponding sides in the ratio 3:53:5. If the smaller triangle has a side of length 9, what is the length of the corresponding side in the larger triangle?

  • A

    12

  • B

    45

  • C

    15

    check_circle
  • D

    27

Explanation

Set up the proportion: frac35=frac9x\\frac{3}{5} = \\frac{9}{x}. Cross multiply: 3x=453x = 45, so x=15x = 15.

Want 10 more like this — adaptive to your weak spots?

Related questions