Geometry Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Point | No dimension, represents a precise location, symbolized with a dot and a capital letter.
🗑
|
||||
| Line | One dimension (length). A straight path that extends infinitely in both directions. Two points determine a line.
🗑
|
||||
| Segment | A part of a line between two endpoints. A finite length.
🗑
|
||||
| Plane | A two dimensional (length and width) surface that extends infinitely in all directions. 3 non-collinear points determine a plane.
🗑
|
||||
| Collinear | Three or more points on the same line. Co (together) Linear (line).
🗑
|
||||
| Non-Collinear | Three or more points that are NOT on the same line. You know that 3 points are non collinear when you cannot draw one line that contains all three of those points.
🗑
|
||||
| Coplanar | Points that lie on the same plane.
🗑
|
||||
| Compass | Geometric tool used to draw a circle or part of a circle known as an arc.
🗑
|
||||
| Straightedge | A tool used to draw straight lines.
🗑
|
||||
| Congruent | Identical. Exactly the same shape and same size.
🗑
|
||||
| Distance | The length of the segment between two points.
🗑
|
||||
| Intersection | A point or set of points common to two or more geometric figures. The intersection of two lines is a point. The intersection of two planes is a line.
🗑
|
||||
| Linear Pair | A pair of angles (two) that form a straight line. These are adjacent and add up to 180 degrees.
🗑
|
||||
| Adjacent | Next to one another. Two angles are adjacent when they share a common vertex and a common side.
🗑
|
||||
| Vertex | A common endpoint. The vertex of an angle is where the two sides of the angle converge or meet.
🗑
|
||||
| Midpoint | The point exactly halfway between the endpoints of a segment.
🗑
|
||||
| Angle | Two rays with a common vertex form an angle measured in degrees.
🗑
|
||||
| Acute Angle | An angle that measures between 0 and 90 degrees.
🗑
|
||||
| Obtuse Angle | An angle that measures between 90 and 180 degrees.
🗑
|
||||
| Straight Angle | An angle that measures exactly 180 degrees.
🗑
|
||||
| Construction Mark | A mark created using a compass. An arc is another name for a construction mark.
🗑
|
||||
| Radius | Constant distance from the center of a circle to a point on the circle.
🗑
|
||||
| Right Angle | An angle that measures exactly 90 degrees.
🗑
|
||||
| Supplementary Angles | Two angles whose sum is 180 degrees.
🗑
|
||||
| Complementary Angles | Two angles whose sum is 90 degrees.
🗑
|
||||
| Proof | A logical argument in which each statement you make is supported by a reason that is accepted as true.
🗑
|
||||
| Parallel Lines | Two lines that never intersect. There is always 180 degrees between them.
🗑
|
||||
| Perpendicular | Forms a right angle.
🗑
|
||||
| Equilateral | Having equal side lengths.
🗑
|
||||
| Equiangular | Having equal angles.
🗑
|
||||
| Right Triangle | A triangle that contains a right angle
🗑
|
||||
| Triangle | 3 sided Polygon. Interior angles always sum to 180 degrees.
🗑
|
||||
| Isosceles Triangle | Triangle with two congruent Legs and two congruent base angles.
🗑
|
||||
| Equilateral Triangle | Triangle with 3 congruent sides and angles.
🗑
|
||||
| Corresponding parts | Matching parts of congruent figures.
🗑
|
||||
| Pythagorean Theorem | A group of three whole numbers that satisfies the equation a^2 + b^2 = c^2, where c is the greatest number.
🗑
|
||||
| Hypotenuse | The largest side of a right triangle. This side is directly 0pposite the right angle.
🗑
|
||||
| Equidistant | The same distance.
🗑
|
||||
| Perpendicular Bisector | A line that is perpendicular (forms right angle) and passes through the midpoint of a segment. Any point on a perpendicular bisector is always equidistant from the two points in which is being bisected.
🗑
|
||||
| Bisector | Cuts exactly into two congruent parts.
🗑
|
||||
| Angle Addition | Part + Part = Whole. The Whole is the sum of its parts. Two adjacent angles that combine to form a larger angle.
🗑
|
||||
| Segment Addition | Part + Part = Whole. The Whole is the sum of its parts. Two segments that combine to form a larger segment.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
mrkamen
Popular Math sets