1 
The altitudes of a triangle are: 
 A. concurrent
 B. collinear
 C. noncollinear
 D. nonconcurrent

2 
The number of angle bisectors of a triangle is: 

3 
If the points of contact of a common tangent to the two circles are on the same side of the line joining their centers then this common tangent is called: 
 A. external tangent
 B. internal tangent
 C. concyclic tangent
 D. concentric tangent

4 
The opposite angles of a parallelogram are: 
 A. congruent
 B. similar
 C. equal
 D. right angle

5 
If the centers of two circles lie in either side of the common tangent then it is called: 
 A. external tangent
 B. internal tangent
 C. concyclic tangent
 D. concentric tangent

6 
An equilateral rectangle is called a: 
 A. Polygon
 B. quadrilateral
 C. parallelogram
 D. square

7 
The midpoint of the diameter of a circle is called: 
 A. radius
 B. chord
 C. center
 D. tangent

8 
The centro id of a triangle divides each one of the medians in the ratio: 
 A. 1:1
 B. 1:2
 C. 2:1
 D. 2:2

9 
The point at which the three anglebisector of a triangle meet is called: 
 A. circumcneter of the triangle
 B. incenter of the triangle
 C. centroid of the triangle
 D. orthocenter of the triangle

10 
A parallelogram containing a right angle is called a: 
 A. quadrilateral
 B. square
 C. rectangle
 D. equilateral
