Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
Geometry terms
Vocab words on geometry
| Term | Definition |
|---|---|
| Geometry | The study of points lines angles surfaces and solids ? |
| Point | A location in space represented by a dot? |
| Line | A collection of points that extend forever in same direction? |
| Line segment | A part of a line that has 2 end points ? |
| Ray | A collection of points that begin at one point and extend forever ? |
| Angle | 2 rays with the same end point ? |
| Vertex | The point where 2 points meet? |
| Plane | A flat surface that extends forever in all directions ? |
| Parallel lines | Lines that are always same distance apart and will never cross each other? |
| Intersecting lines | Lines that cross each other in the same spot ? |
| Perpendicular lines | Intersecting lines that cross and make a right angle 90 degrees ? |
| Acute angle | A angle less than 90 degrees ? |
| Right angle | A perfect 90 degree angle ? |
| Obtuse angle | A angle that is greater then 90 but less then 180 degrees ? |
| Straight | A line that is flat 180 degrees? |
| Reflex angel | A angle that is between 180 and 360 degrees ? |
| Supplementary lines | 2 angles that equal to 180 degrees? |
| Complementary lines | 2 angles that equal to 90 degrees |
| Polygon | A closed plane figure with 3 or more sides triangle? |
| Triangle | A polygon with 3 sides? |
| Right triangle | A triangle with one 90 degree angle? |
| Obtuse triangle | A triangle that has one angle that is bigger than 90? |
| Acute triangle | All angles are less then 90 degrees |
| Scalene triangle | A triangle with no equal sides? |
| Isosceles triangle | A triangle with 2 equal sides ? |
| Equilateral triangle | A triangle with all equal sides |
| Quadrilateral | A polygon with 4 sides? |
| Square | A polygon with 4 equal sides and 4 right angles? |
| Rectangle | A 4 sided polygon with 4 right angles and 2 opposite angles are Equal? |
| Rhombus | A polygon with 4 equal sides and opposite angles are equal? |
| Parallelogram | A 4 sided polygon with 2 equal and parallel sides? |
| Trapezoid | A 4 sided polygon with one pair of parallel sides and one pair of Sides that are not parallel ? |
| Area | Number of square units needed to cover a region |
| Perimeter | The add up,of all sides around a shape |
| Area of square | Base x height |
| Area of rectangle | B x h |
| Area of triangle | 1/2 x b x h |
| Area of Parallelogram | A = b x h |
| Area of trapezoid | 1/2 x h ( b1 + b2 ) |
| Altitude | Another word for height |
Created by:
401512
Popular Math sets