Mathematics — first biennium · Lesson
Parallel lines cut two transversals into proportional segments. The proportion expresses the same scale on both sides.
Prerequisites: Parallel lines and proportions
Goal: Use parallelism to establish proportions between corresponding segments.
In this lesson: Use parallelism to establish proportions between corresponding segments.
How to proceed: Match corresponding segments in the same order. The scale factor must be the same on both transversals.
You can already assume: Parallel lines and proportions.
Completed exercises: 0/5 · Correct on first attempt: 0
Match corresponding segments in the same order. The scale factor must be the same on both transversals.
Data / situation: AB=4, A'B'=12, AC=4; the corresponding lines are parallel. Find A'C'.
ConceptStep separates what is required from what is recommended or useful as reinforcement. Only required prerequisites block your progress.
Relationships: solid line = required · dashed line = recommended · dotted line = reinforcement.