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1 Segment Addition Postulate - Solving Equations Bell Ringer

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Page 1: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Segment Addition Postulate - Solving EquationsBell Ringer

Page 2: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Construction Activity

1.  On a piece of paper, draw AB.A

B

2.  Fold the paper so that point B is on top of point A.

3.  Label the point where the fold intersects AB as point M.

4.  Use a ruler to measure the lengths of AM, MB, and AB.

A

B

M

A

B

M

What do you notice about these lengths?  Write a congruency statement.

Page 3: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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   Midpoint of a segment‐ the point on the segment that divides it into two congruent segments.

Segment bisector‐ a segment, ray, line, or pplane that intersects a segment at its midpoint

bisect a segment‐ divide a segment into two congruent segments.

Page 4: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Page 5: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Page 6: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Try These:

1.  Use the Midpoint formula to find the midpoint, M, of PQ when P(0,5) and Q(‐1,2).

2.  Find the midpoint, M, of ST when S(2,5) and T(4,7).

3.  Line l bisects AB.  Find AB. A B4x ­ 3  3x + 2 

l

Page 7: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Homework:Pages 56‐57 (11‐15, 18‐36 even)

Page 8: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Page 9: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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Page 10: Bell Ringer - Anderson School District Five€¦ · In the Geo-Activity, M is called the midpoint of AB. The midpoint of a segment is the point on the segment that divides it into

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