Geometry: Finding Angle Measures

quadrilateral with angles

Note: Figure is not drawn to scale.

1. In the figure above what is the value of $\angle$A?

(A)68

(B)90

(C)54

(D)112

(E)78

Triangle with external angle

Note: Figure is not drawn to scale.

2. In the figure above, what is $x + y$?

(A)81°

(B)27°

(C)63°

(D)33°

(E)90°

Rectangle with diagonals

Note: Figure is not drawn to scale.

3. Using the figure above, find the value of $x$? 

(A)21°

(B)63°

(C)117°

(D)45°

(E)39°

 

 

4. What is the average (arithmetic mean) of nine angles in three triangles if two of those angles are 25° angles?

 

 

 

Answer Key: