1 
The number of angle bisectors of a triangle is: 

2 
The midpoint of the diameter of a circle is called: 
 A. radius
 B. chord
 C. center
 D. tangent

3 
The opposite angles of a parallelogram are: 
 A. congruent
 B. similar
 C. equal
 D. right angle

4 
All the altitudes are equal of an: 
 A. rectangle
 B. scalene triangle
 C. isosceles triangle
 D. equilateral triangle

5 
The altitudes of a triangle are: 
 A. concurrent
 B. collinear
 C. noncollinear
 D. nonconcurrent

6 
A line segment joining a vertex to the midpoint of the side opposite to the vertex is called: 
 A. altitude to the triangle
 B. side bisector of the triangle
 C. angle bisector if the triangle
 D. median to the triangle

7 
A parallelogram containing a right angle is called a: 
 A. quadrilateral
 B. square
 C. rectangle
 D. equilateral

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 of intersection of the perpendicular bisectors of he sides of a triangle meet is called 
 A. circumcenter of the triangle
 B. incenter of he triangle
 C. centroid of the triangle
 D. orthocenter of the triangle

10 
A line segment that bisects and angles of the triangle and has its other end on the side opposite to that angle is called: 
 A. altitude of the triangle
 B. incenter of the triangle
 C. angle bisector if the triangle
 D. median of the triangle
