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Warm-up. E. A. 1. If CD = 6, what is BC?. B. 12. G. 2. Find AG if DG = 12. D. 24. C. 3. If CG = 10, find CE?. 15. 4. Find the length of NP. 5. 13. 24. Homework Review. 13) 25 14) 20 15) 24 16) 25 17) 15 18) 48 14) 16 15) 7 16) 5 17) 8. Math I.
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Warm-up E A 1. If CD = 6, what is BC? B 12 G 2. Find AG if DG = 12. D 24 C 3. If CG = 10, find CE? 15 4. Find the length of NP. 5 13 24
Homework Review 13) 25 14) 20 15) 24 16) 25 17) 15 18) 48 14) 16 15) 7 16) 5 17) 8
Math I UNIT QUESTION: What are the properties and characteristics of polygons? Standard: MM1G1.e. Today’s Question: What four things do we know about all parallelograms? Standard: MM1G.1.e.
The prefix QUADR means 4. Quadrant Quadruple Quadricepts Quadrilateral
To name a quadrilateral... list the vertices in order, like the sweeping hands of a clock. QUAD UADQ U Q ADQU A D DQUA
Consecutive C B Consecutive Sides A D One after the other
Consecutive C B Consecutive Vertices A D One after the other
Diagonal C B A D Segment with two nonconsecutive vertices
Washington, D.C. United States Capitol Name the attraction that is located on a diagonal. Name the attractions that are located on the vertices. Washington Monument Jefferson Memorial White House Lincoln Memorial
5-8 Parallelograms Opposite angles are congruent
ADD UP TO 180 Consecutive angles are supplementary.
Diagonals bisect each other. This cuts the diagonals into two equal parts.
23 K L 15 N M
23 K L 15 N M
23 K L 15 N M
K L P N M
Parallelogram Workbook Practice 5-8
5-9 Tests for Parallelograms How do you know if you have one?
Is this a parallelogram? How do you know for sure?
Is this a parallelogram? How do you know for sure?
Is this a parallelogram? How do you know for sure?
There are 6 different ways 1.BOTH pairs of opposite sides are parallel 2.BOTH pairs of opposite sides are congruent 3. BOTH pairs of opposite angles are congruent 4.ONE angle is supplementary to BOTH consecutive angles 5.diagonals BISECT each other 6. ONE pair of opposite sides are CONGRUENT & PARALLEL
6 6 Do you have enough information? Yes Yes No Yes
50° 130° Do you have enough information? Yes No Yes Yes
Homework p. 306 #1-9 p. 313 #1-10