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Midpoint G.3A (day4)Objective:SWBAT find the mdpt on a number line & coordinate plane (1.7)lWarm-up:“Terms Segments Lengths”- odds**hw/hw log/StorybookHomework (day 4):“Terms, segments, Lengths” worksheet(evens)“Midpoints” worksheet(evens)Pearsonsuccess due FridayBring Graph Paper for day 5 LessonQuiz next block (alg I skills, 1.2, 1.3,1.7)

Warm-up (day 4)

- “Terms, Segments and Lengths” worksheet (odds)
- Check Homework
- Answer Quiz questions

Midpoint of a Segment

What does midpoint of a segment mean?

“MAD” midpoint, add, divide

If X is the midpoint of AB ____________

If AX BX ____________________

“Midpoint” worksheet (1-8)

B

A

X

Midpoint

Midpoint on Number Line

Midpoint RC 2. XB 3. 4. KC 5.

-3 190 124 8 29

Midpoint PR 7. Length BX 8. identify two congruent segments

123 190 BR KB

Midpoint of a Segment on a coordinate Plane

”MAD” = midpoint, add, divide

Let’s Practice- graph Paper in front of room

Given: C(-3,0) D(-3,-4)

- Midpoint AB (2, 1)

10. AB

11. (0, -1)

12. Length AC

13. CD 4

A

B

Example:

14. In the skateboard design, bisects at point T, and find .

“Midpoint” worksheet (9-17odd)

X

V

T

W

Y

Using Algebra with line segments

15. Point M is the midpoint of ; Find the length of .

4x - 1

3x + 3

V

M

W

Finding the missing value(s)

16. Find the missing endpoint of where M is midpoint (4,-1) and J(3,2). Find the coordinates of K. (5, -4)

17. The midpoint is (-1, 0) and one endpoint is

(-5,-6). Find the missing endpoint. (3, 6)

Extra Practice:

19. Find the coordinates of the missing endpoint of when M(-1,-2) and one endpoint is W(4,4). Find the coordinates of V.

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