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Geo Constructions
Vocab for Geometry Intro & Constructions
| Question | Answer |
|---|---|
| Point | A fixed location with no length, width or depth; May be expressed as (x,y) |
| Line | A set of points that extends infinitely in both directions |
| Line Segment | Part of a line that is bounded by two distinct end points; a portion of a line |
| Angle | When 2 rays come together and meet at a point called the vertex |
| Ray | A set of points that is bounded by one endpoint, and then extends infinitely in the other direction |
| Polygon | A closed sided figure with 3 sides or more |
| Right Triangle | A triangle with 1 right angle |
| Isosceles Triangle | A triangle with 2 sides and 2 angles congruent to each other |
| Equilateral Triangle | A triangle with 3 sides and 3 angles congruent |
| Scalene Triangle | A triangle with no sides or angles congruent |
| Perpendicular | Lines that intersect to form right angles |
| Parallel | Lines that will never intersect |
| Bisect | To cut in half |
| Angle Bisector | A line or ray that cuts an angle into 2 congruent parts; the bisector passes through the vertex |
| Perpendicular Bisector | A line or line segment that cuts another line segment in half, passes through its midpoint and forms right angles |
| Circle | The set of all points equidistant from a fixed point called the center |
| Radius | The distance from the center to the edge of a circle |
| Diameter | A line segment that passes through the center of the circle, and whose endpoints lie on the edge of the circle. |
| Square | A quadrilateral with four congruent sides and four congruent angles |
| Hexagon | A 6-sided polygon |
| Regular | When all sides and angles are congruent in a shape |
| Inscribed | When one shape fits perfectly inside the other such that the edges of the shape are touching |
| Median (of a triangle) | A line segment that extends from the midpoint of one side to the opposite vertex |
| Altitude (of a triangle OR of another shape) | Height of a shape. In a triangle or other shapes, it extends from a vertex and goes down to the opposite side, forming a right angle (it's perpendicular). |
| Midpoint | The point located in the middle of a line segment |
| Equidistant | The same distance apart |
| Right Angle | An angle that measures 90 degrees |
| Concurrent | When 3 or more lines, rays, or segments intersect |
| Point of Concurrwency | The point of intersection when 3 or more lines, rays, or segments intersect |
| Circumcenter | The point of intersection (concurrency) of the 3 perpendicular bisectors of a triangle |
| Incenter | The point of intersection (concurrency) of the 3 angle bisectors of a triangle |
| Centroid | The point of concurrency (intersection) of the 3 medians of a triangle |
| Orthocenter | The point of intersection (concurrency) of the 3 altitudes of a triangle |
| Vertex (definition in Geometry) | The middle point of an angle where the two rays intersect |
| Congruent | Exactly equal in size and shape |
| Trapezoid | A quadrilateral with only 1 pair of opposite parallel sides |
| Reflection | When an image is flipped over a line of reflection |
| Parallelogram | A quadrilateral with 2 pairs of opposite sides that are congruent and parallel. This includes rectangles, rhombuses, and squares |
| Quadrilateral | A four sided figure |
Created by:
madsilverman
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