Write T if the statement is true and F if the statement is false.

1. If a triangle is isosceles, then it has two congruent sides.
2. An angle bisector is a segment, line, or a ray that divides the angle equally.
3. If B is between A and C, then AB + BC = AC.
4. Midpoint is a point on a line segment that divides it into two equal parts.
5. If two angle forms a linear pair, then they are supplementary.
6. Complementary angles are two angles whose measures have a sum of 180°.
7. If a triangle has two congruent sides, then it is equiangular.
8. Three non--collinear points determine a plane.
9. If two planes intersect, then their intersection is a point.
10.Two intersecting lines are contained in one and only one plane.​