Shared Flashcard Set

Details

Figures in a Plane
Points, lines, angles, circles, parallel lines
39
Mathematics
7th Grade
04/11/2011

Additional Mathematics Flashcards

 


 

Cards

Term
Point
Definition
An exact location
Term
Line
Definition
Through any two point there is exactly one line. A line has no thickness, & goes on forever in both directions
Term
Plane
Definition
a flat surface extending infinitely in all directions.three
Term
Midpoint
Definition
a point that is located in the exact middle of a segment 7 creates two congruent segments.
Term
coplanar
Definition
Points that all lie on one plane
Term
Circle
Definition
the set of all points in a plane that are the same distance from a given point
Term
Radius
Definition
distance from the center to any point of the circle
Term
diameter
Definition
a chord that passes through the center
Term
chord
Definition
a segment joining two points on a circle
Term
secant
Definition
a line that passes through a circle
Term
circumference
Definition
the distance around a circle
Term
Angle
Definition
formed by two rays with a common endpoint
Term
vertex of an angle
Definition
the common endpoint of an angle
Term
Perpendicular lines
Definition
two lines that intersect to form 4 congruent angles. all angles are 90 degrees
Term
Vertical angles
Definition
the nonadjacent angles formed by two intersecting lines. they are congruent.
Term
angle bisector
Definition
an ray that goes through an angle and creates two congruent angles
Term
acute angle
Definition
angle with a measure between 0-90
Term
obtuse angle
Definition
an angle with measure between 90-180
Term
right angle
Definition
angle with measure of 90
Term
Supplementary angles
Definition
when the measure of two angles sum is 180
Term
Complementary angles
Definition
when the sum of the measures of two angles is 90
Term
Vertical angles
Definition
are the nonadjacent angles formed when two lines intersect. they are congruent
Term
Parallel lines
Definition
two planes that are in the same plane & do not intersect
Term
Transversal
Definition
a line that intersects two or more other conplanar lines
Term
Triangle
Definition
formed by 3 noncollinear points. the sum of the angle measures is 180
Term
Acute triangle
Definition
triangle with 3 acute angles
Term
right triangle
Definition
a triangle with exactly 1 right angle
Term
obtuse triangle
Definition
a triangle with exactly 1 obtuse triangle
Term
scalene triangle
Definition
a triangle with no two sides congruent
Term
Isosceles triangle
Definition
triangle with at least two congruent sides
Term
Equilateral triangle
Definition
a triangle with all sides are congruent
Term
Quadrilateral
Definition
a 4-sides closed figure
Term
Parallelogram
Definition
a quadrilateral
both pairs of opposite sides are parallel
opposite sides are congruent
opposite angles are congruent
Term
Rhombus
Definition
parallelogram
opp. sides parallel
all sides congruent
opp. angles congruent
Term
rectangle
Definition
opp. sides parallel
opp. sides congruent
4 right angles
Term
square
Definition
opposite sides parallel
all sides congruent
4 right angles
Term
Polygon
Definition
a closed figure made of segments joined at their endpoints.
Term
perimeter
Definition
sum of a polygons sides
Term
regular figure
Definition
all sides and angles are congruent.
Supporting users have an ad free experience!