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Geometry: Basic Geometry

1. Line segment AC has a midpoint of B. D is the midpoint of AB. If AD is equal to 18, what does DC equal?

ANSWER: (E) 54

 

2. In the figure above, how many lines of symmetry does the figure have?

ANSWER: (B) 5

 

3. Ray AC bisects $\angle$BAD. Ray AD bisects $\angle$BAE.  $\angle$DAE is 25$^\circ$. Based on the information given, which angle can you not find? 

ANSWER: (D) $\angle$FAE

4. Ray AE bisects $\angle$BAF. $\angle$BAC, $\angle$CAD, and $\angle$DAE are all congruent. What is the value of $\angle$DAF if $\angle$EAF is 60$^\circ$?

ANSWER: 80