geometry vocab

2. two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle
4. the sum of the three interior angles of any triangle is always 180 degrees
6. the line segment from a vertex to the midpoint of the opposite side
8. two angles and the the included side of one triangle are congruent to two angles and the included side of another triangle
9. three sides of one triangle are congruent to three sides of another triangle
11. Corresponding Parts Congruent Triangles Congruent
13. Statement that can be written in "if.....then" form
14. a line segment through a vertex and perpendicular to a line containing the side opposite the vertex.
17. a line that splits an angle into two equal angles
19. the point where the perpendicular bisectors of the sides of that particular triangle intersect

1. if a,b and c are collinear points and b is between a and c then ab+bc=ac
2. if a=b then a may be replaced by b in any expression or equation
3. the point where all three altitudes of the triangle intersect
5. a line that bisects another line segment at a right angle, through the intersection point
7. two angles and a following side of one triangle are congruent to two angles and a following side of another triangle
10. Slope is a measure of the steepness of a line
12. for any real number a=a
15. the point where medians meet
16. Hypotenuse-Leg
18. where all the angle bicectors meet