| A | B |
|---|
| Angle | point formed when two segments or rays meet at a common point |
| Vertex | point where two segments meet |
| Degrees | measurement used to measure angles |
| Right angle | measures 90 degrees |
| Straight angle | measures 180 degrees |
| Acute angle | measures less than 90 degrees |
| Obtuse angle | measures more than 90 but less than 180 degrees |
| Congruent | when two angles or sides have same measure |
| Bisect angles | when you separate ONE angle into two congruent angles with a bisector |
| Polygon | a closed figure in a plane |
| Scalene triangle | has no congruent sides |
| Isosceles triangle | has two congruent sides |
| Equilateral triangle | has all three sides congruent |
| Square | quadrilateral with 4 right angles and 4 congruent sides |
| Rectangle | quadrilateral with 4 right angles and sides are equidistant |
| Paralleogram | quadrilateral with opposite side parallel and congruent |
| Rhombus | quadrilateral that is a parallelogram with 4 congruent sides |
| Trapezoid | quadrilateral but only ONE pair of sides is parallelside |
| Regular Polygon | a polygon that is equilateral and equiangular |
| Plane | set of points on a flat surface that extend indefinitely |
| Bisect | to divide into TWO equal parts |
| Compass | a tool for drawing circles |
| Geometry | the study of space and figures in space |
| Line | a set of points along a path in a plane |
| Perpendicular line | a line that intersects another line to form two 90 degree angles |
| Protractor | tool for measuring angles |
| Ray | a portion of a line that extends indefinitely in ONE direction |
