Lesson_5-1_Midsegments_of_Triangles

# Lesson_5-1_Midsegments_of_Triangles - Midsegments of...

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Midsegments of Triangles Lesson 5-1

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Midsegment A segment that joins the midpoints of two sides of a triangle is called a midsegment.
Midsegment Properties A midsegment of a triangle is parallel to the third side and is half the length of the third side. A E D C B 2 mCB mDE

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Midsegment Properties The three midsegments of a triangle divide it into four congruent triangles.
Example EF is the midsegment of BAC, determine the length of EF 100 cm 50 2 100 2 mAC mEF E F A B C

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Example EF is the midsegment of BAC, determine the length of EF 150 cm 75 2 150 2 mAC mEF E F A B C
Example Find the length of MN 250 cm 125 2 250 2 mGK mMN M N G H K

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Example PR is the midsegment of STU and measures 75 cm. Determine the length of SU. mSU mSU mSU mPR 150 2 75 2 75 cm P R S T U
Example Find the length of AC 250 cm mAC AC 500 2 250 E F A B C

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Example Find the length of AC 23 cm E F A B C 46 cm
Example Find the length of AC 50 cm E F A B C 25 cm

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Example Find the length of AC 140 cm E F A B C 70 cm
Example

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• Fall '16
• Springstroh, Laura
• Angles, Congruence, Harshad number, Orders of magnitude, triangle

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