CK-12 Geometry Concepts

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

2. Ifm^6 INJ= 53 ◦, findm^6 MNL.

For exercises 3-5, determine if the statement is true or false.

3. Vertical angles have the same vertex.


4. Vertical angles are supplementary.


5. Intersecting lines form two pairs of vertical angles.

Solve for the variables.

6. Findx.


7. Findy.


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12. 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?


13. 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?


14. 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?


15. 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?