Geometry

4. part of a line and can be indicated by its endpoints.
6. a triangle that has two identical sides and angles
8. bisector a segment that bisects another segment at 90 degrees.
10. a type of isosceles triangle where each side is identical and each angle is 60 degrees
12. by the intersection of two lines or segments and can also be indicated by its endpoints.
13. shapes have the same angles and side-length ratios but have different sizes
14. any complete shape having more than two sides and only straight sides
15. opposite angles, known as ___ angles, are equal and all four angles total 360 degrees.
17. ____ total is the sum of the angles of a polygon
18. a triangle where one angle is ninety degrees
19. has angles totaling 180 degrees and can be indicated by its endpoints.

1. shapes are identical, though one shape can be rotated
2. the length of the outline of a shape.
3. a segment that bisects, or divides, an angle or another segment into two equal parts.
5. ______ angles total 90 degrees.
7. ______ angles total 180 degrees.
9. _______ geometry is a method of using algebraic equations to describe points, lines and shapes on a (x,y) coordinate plane, also known as the x-y rectangular grid.
11. a line that crosses two or more lines.
16. straight and continuous