CK-12 Geometry-Concepts

http://www.ck12.org Chapter 1. Basics of Geometry

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11. If^6 ABCand^6 DBFare vertical angles andm^6 ABC= ( 4 x+ 1 )◦andm^6 DBF= ( 3 x+ 29 )◦, what is the measure
    of each angle?


12. If^6 ABCand^6 DBFare vertical angles andm^6 ABC= ( 5 x+ 2 )◦andm^6 DBF= ( 6 x− 32 )◦, what is the measure
    of each angle?


13. If^6 ABCand^6 DBFare vertical angles andm^6 ABC= (x+ 20 )◦andm^6 DBF= ( 4 x+ 2 )◦, what is the measure
    of each angle?


14. If^6 ABCand^6 DBFare vertical angles andm^6 ABC= ( 2 x+ 10 )◦andm^6 DBF= ( 4 x)◦, what is the measure of
    each angle?