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# Points, Lines, Angles, and Planes

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# Arithmetic in Geometry Exercises

### Example 1

If m∠*RPL* = 140°, what is the measurement of ∠*LPO*?

### Example 2

If m∠*KLG* = 57°, what is the measurement of ∠*OLN*?

### Example 3

If the measure of *LM* is 8 units and *L* is the midpoint of *QM*, how long is *QM*?

### Example 4

If m∠*ONL* = 40°, what is the measurement of ∠*ONS*?

### Example 5

If m∠*GLH* = 21°, what is the measurement of ∠*JLU*?