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Midsegment of a Triangle and Proportionality in Triangles
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Triangle Midsegment Theorem
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Triangle Midsegment 1. Parallel to one side of the triangle
2. Is half the length of the parallel side 3. Connects to the midpoints midsegment
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Triangle Midsegment Theorem
EQUATION Midsegment Parallel Side
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1. Solve for x. x = 9 x 18
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2. Solve for y. y = 24 12 y
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3. Solve for x. x = 14 3x 84
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4. Solve for x. x = 2 4 5x – 2
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5. Solve for the missing variables.
x = 12 z y = 133 x 47 z = 11 11 y 24
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Proportional Parts of Triangles
Be consistent with how you set up the proportion.
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6. Solve for x. 4 6 x x = 8 18
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7. Solve for x. x 8 10 4 x = 20
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Textbook p. 200 #11 – 16, 21 – 27 p. 276 #1 – 5, 8, 9, 15 – 20 p. 283 #4 & 5
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