Use half the length to connect the midpoints. A section of a playlist on geometry introduces the concept of a midsegment of a triangle and how to find it. The video states the properties of the midsegment which make up the Midsegment Theorem.

Concepts

triangle properties, midpoints, triangles, midpoint formula, coordinate geometry

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Additional Tags

math

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Instructional Ideas

• Use similar triangles to prove the Midsegment Theorem
• Use the Midsegment Theorem to find side length and angle measures

Classroom Considerations

• Pupils should be familiar with the midpoint formula

• This video is hosted on YouTube

Pros

• Contains a link to other midsegment resources by CK-12
• Rotates the figure when marking midsegments to maintain orientation

Cons

• None

Common Core

HSG-CO.C.10 MP3 MP6