Shared Flashcard Set

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geometry
4th grade
20
Mathematics
4th Grade
03/13/2007

Additional Mathematics Flashcards

 


 

Cards

Term
This angle measures exactly 90 degrees.
(It is formed by perpendicular lines)

a. acute
b. right
c. obtuse
Definition
b. Right angles measure 90 degrees
Term
This angle measures less than 90 degrees.

a. acute
b. right
c. obtuse
Definition
a. Acute angles measure
less than 90 degrees.
Term
This angle measures greater than 90 degrees.

a. acute
b. right
c. obtuse
Definition
c. Obtuse angles measure greater than 90 degrees.
Term
This polygon has 3 sides....
Definition
triangle
Term
These polygons have 4 sides....
Definition
quadrilaterals
Term
This polygon has 5 sides....
Definition
pentagon
Term
This polygon has 6 sides....
Definition
hexagon
Term
This polygon has 8 sides....
Definition
octagon
Term
This quadrilateral has just one set of parallel sides...

a. rhombus
b. parallelogram
c. trapezoid
Definition
c. trapezoid
Term
This quadrilateral has two sets of opposite, parallel sides ...

a. trapezoid
b. parallelogram
c. duodecagon
Definition
b. parallelograms have 2 sets of opposite, parallel sides.
Term
This quadrilateral has two sets of opposite, parallel sides, AND four right angles ...
a. rhombus
b. rectangle
c. triangle
Definition
b. rectangle
Term
This quadrilateral has two sets of opposite, parallel sides, AND four right angles, AND all sides are equal...
a. rectangle
b. square
c. rhombus
Definition
b. square
Term
This quadrilateral has two sets of opposite, parallel sides, AND all four sides are equal (NO right angles)
a. square
b. rectangle
c. rhombus
Definition
c. rhombus
Term
This is an exact location in space.

a. line
b. ray
c. point
Definition
c. point
Term
This is a collection of points that continues ON and ON in BOTH directions.

a. line
b. ray
c. point
Definition
a. Line
Term
This is part of a line that has 2 endpoints.

a. ray
b. point
c. line segment
Definition
c. Line Segment
Term
This is part of a line that has ONE endpoint, and ONE end that keeps going and going...

a. line
b. ray
c. point
(like a flashlight)
Definition
b. Ray
Term
Lines that are always the SAME DISTANCE APART and will NEVER CROSS are ...

a. Rays
b. Perpendicular
c. Parallel
Definition
c. Parallel lines (ll)
Term
Lines that cross (or intersect) at some point are simply called ...

a. Intersecting
b. Parallel
c. Rays
Definition
a. Intersecting lines
Term
Lines that cross (intersect) AND FORM A RIGHT ANGLE are ...

a. Parallel
b. Perpendicular
c. Rays
Definition
b. Perpendicular lines
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