SOLUTION: In triangle RST, BK is the midsegment between sides RS and RT. If ST is 18 units, how long is BK? (please explain + show work if any.)

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Question 1107888: In triangle RST, BK is the midsegment between sides RS and RT. If ST is 18 units, how long is BK? (please explain + show work if any.)
Found 2 solutions by KMST, ikleyn:
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
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A midsegment is half as long as the triangle side parallel to it.
The midsegment of a triangle splits the triangle into two pieces.
The smaller piece is a 1/2 scale version of the original triangle.
(The teacher would call it a similar triangle).

Answer by ikleyn(52879) About Me  (Show Source):
You can put this solution on YOUR website!
.
On mid-segment of a triangle see the lesson
    - The line segment joining the midpoints of two sides of a triangle
in this site.

Also,  you have this free of charge online textbook on Geometry
    GEOMETRY - YOUR ONLINE TEXTBOOK
in this site.

The referred lessons are the part of this online textbook under the topic  "Properties of triangles".


Save the link to this online textbook together with its description

Free of charge online textbook in GEOMETRY
https://www.algebra.com/algebra/homework/Triangles/GEOMETRY-your-online-textbook.lesson

to your archive and use it when it is needed.