6.4. Rectangles, Rhombuses and Squares http://www.ck12.org
TABLE6.8:
Properties of Parallelograms Properties of Rhombuses Properties of Rectangles• SQ||ER •SQ∼=ER∼=SE∼=QR •^6 SER∼=^6 SQR∼=^6 QSE ∼=
(^6) QRE
• SE||QR •SR⊥QE •SR∼=QE
• SQ∼=ER •^6 SEQ∼=^6 QER∼=^6 SQE ∼=
(^6) EQR
• SA∼=AR∼=QA∼=AE
• SE∼=QR •^6 QSR ∼=^6 RSE ∼=^6 QRS ∼=
(^6) SRE
• SA∼=AR
• QA∼=AE
•^6 SER∼=^6 SQR
•^6 QSE∼=^6 QRE
Parallelograms in the Coordinate Plane
Example 4:Determine what type of parallelogramT U NEis:T( 0 , 10 ),U( 4 , 2 ),N(− 2 ,− 1 ), andE(− 6 , 7 ).