Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

4th Grade Geometry

TermDefinition
Angles the amount between two rays that have same endpoint(vertex). Measured in degrees
Right Angle An angle measuring 90°.
Acute Angle An angle measuring less than 90°
Obtuse Angle An angle measuring more than 90°
Straight Angle An angle measuring 180°.
Degrees a unit for measuring the size of an angle, symbol º.
Protractor an instrument used to measure angles in degrees.
Rays A line with a start point but no end point
Vertex (Vertices) A point where two or more rays of an angle meet
Line of symmetry line that divides a figure into two congruent parts, each of which is the mirror image of the other
Parallel same distance apart and never touching
Perpendicular Intersecting lines that form right angles.
Square a quadrilateral with four equal sides and four right angles;
Rectangle a quadrilateral with two pairs of opposite equal parallel sides, four right angles .
Right Trapezoid a trapezoid with a right angle
Quadrilateral A polygon with 4 sides and 4 angles
Parallelogram a quadrilateral with opposite sides that are parallel and opposite angles that are equal.
Rhombus A quadrilateral with 4 equal sides and opposite sides are parallel.
Trapezoid A quadrilateral with only one pair of parallel sides.
Acute triangle A triangle with 3 acute angles
Obtuse triangle A triangle with one obtuse angle.
Right triangle A triangle with one right angle.
Polygons A closed figure with three or more straight sides.
Perimeter The distance around a figure.
Area The size a surface takes up, measured in square units
Attribute A characteristic of a shape.
Classify To arrange in groups by attribute
Line Segment A section of a line, with two endpoints
Intersect To cross over one another.
Intersecting Lines Lines that to cross over one another.
Figure Shape
Horizontal Line A line parallel to the horizon.
Vertical Line A line at right angles to the horizon.
Created by: jzschau
Popular Academic Vocabulary sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards