The document describes a classroom timer counting down from 2 minutes to 0 minutes. It then lists the topic of properties of midsegments and triangle geometry. Key observations are made about midsegments in triangles and trapezoids, including that the midsegment of a triangle is parallel to the third side and half its length, and that the midsegment of a trapezoid is parallel to the bases and its length is the average of the two bases.

2. LAST NIGHT’S HW

3. Back to Clock Home 01 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 Classroom Timer 00 2 Minutes

4. Back to Clock Home 00 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 Classroom Timer 00 1 Minute

6. ANSWERS

7. ANSWERS

8. ANSWERS

9. 6.4 Properties of Midsegments Need: -Notes -Conjecture List

10. Review MIDSEGMENT A segment connecting the midpoints of two sides of a triangle

11. Review MIDSEGMENT A segment connecting the midpoints of two sides of a triangle The three midsegments divide the triangle into 4 smaller, congruent triangles

12. OBSERVATIONS

13. OBSERVATIONS © TRIANGLE MIDSEGMENT CONJECTURE The midsegment is parallel to the third side and half the length of the third.

14. OBSERVATIONS © TRAPEZOID MIDSEGMENT CONJECTURE The midsegment of a trapezoid is parallel to the bases and its length is the average of the two bases.

15. OBSERVATIONS © TRAPEZOID MIDSEGMENT CONJECTURE The midsegment of a trapezoid is parallel to the bases and its length is the average of the two bases.

16. OBSERVATIONS © TRAPEZOID MIDSEGMENT CONJECTURE The midsegment of a trapezoid is parallel to the bases and its length is the average of the two bases.

17. CLASSWORK WORKSHEET