GEOMETRY VOCAB

1. Cut a angle in half. This mainly done by segments, lines, and rays.
4. Segment from vertex to side opposite from vertex AND perpendicular. This is also known as the height of the triangle.
7. Formed by one side of a triangle and it is an extension of an adjacent angle. It's an angle formed by a transversal.
8. When 3 or more lines intersect, at a common point. The lines mainly come from the angles.
12. sum of exterior angles of any convex ploygon is 360.You find this by setting the sum of a certain kind of angle to 360 degreese.
13. 2 sides of a triangle are congruent to 2 sides of another triangle. The angle of the first triangle is larger than that of the second triangle.
15. all agnles are right angles, opposite sides are parallel and congruent, opposite angles are congruent, and consecutive angles are supplementary. You find this by using the slop formula.
16. formed by one side of triangle and extension of an adjacent side. The angle between a side of a plygon and an extended adjacent side.
17. parallelogram that has 4 congruent sides and 4 right angles. You find this by using the distance formula.
18. Same size, same shape. Their corresponding angles and sides are of equal measure.
19. a segment of a vertex of triangle to midpoint of the opposite side. It divides somthing into two equal halves.
20. Assuming that a conclusion is false. Then showing that the assumption led to a contradiction.

2. All sides are congruent and each angle is 60 degrees. Also known as a "regular" triangle.
3. Point of concurrency for perpendicular bisectors. The perpendicular bisectors of the sides or a triangle intersect and which is equidistant front he 3 vertices.
5. sum of interior angles of n-sided polygon. Has a formula to find the sum of a polygons angles.
6. 2 angles not adjacent to exterior angle.Angles that don't share a vertex or corner of a triangle with the exterior angle.
9. parallelogram w/4 congruent sides. You find this by using the slope formula.
10. quadrilateral w/exactly one pair of parallel sides. It can have right angles.
11. quadrilateral w/exactly 2 pairs of consecutive congruent sides. It's diagonals are perpendicular and exactly one par of opposite angles are congruent.
14. 2 angles and the included side of one triangle are congruent to 2 angles and the included side of another triangle. Therefore making the 2 triangles congruent.