math - Crossword Labs

3. The ______ of the three angles of a triangle is 180*
7. the angles formed between the side of the polygon and the extended adjacent side of the polygon
11. A line that intersects two or more straight lines at distinct points
12. The angles that lie inside a shape,
14. the points that lie on the same straight line or in a single line
17. two rays are joined together at a common point
18. how many Euclid's axioms are there
19. the lines that do not intersect or meet each other at any point in a plane.

1. A part of a line having two endpoints.
2. The set of points that do not lie on the same line
4. a straight line that goes from left to right or right to left
5. the phenomenon when a ray of light enters from one medium to another, then it deviates from its actual path
6. The two sides of the angle, joined at a common endpoint
8. a simplified drawing showing the appearance, structure, or workings of something; a schematic representation.
9. Two angles have a common side with a common vertex without overlapping of angles
10. a three-sided polygon, which has three vertices
13. one dimensional figure and has no thickness
15. a part of a line which has a fixed starting point but no end point
16. The point about which an angle is measured