Download Topic 11 Memory Cards

Point
Line
Ray
Intersect
An exact location
A straight path that goes on
forever. (180 degrees)
A part of a line that only goes
on in one direction without
stopping. It has an endpoint.
Cross at one point
Perpendicular
Parallel
Congruent Line Segment
Mid Point
Special intersecting lines, rays, or
segments. (Form 90 degrees)
lines, rays, or segments that never
touch. They always remain same
distance apart.
Line segments that are the same
size (≅)
Halfway between endpoints of
a line segment
Angle
Vertex
Acute Angle
Right Angle
Two rays with same
endpoint
Endpoint of two rays.
Angle smaller than 90 degrees
Angle exactly 90 degrees
Obtuse Angle
Straight Angle
Vertical angles
Congruent Angles
Angle larger than 90 degrees
Angle measuring exactly 180
degrees (forms a line)
pair of angles that are formed by
intersecting lines and have no side
in common.
have the same measure
Adjacent Angles
Complementary Angles
Supplementary Angles
Acute Triangle
pair of angles with a common
vertex and a common side
but no common interior points.
two angles whose measure
adds up to 90 degrees.
Two angles whose measures add
add up to 180 degrees
All angles are acute angles
Right Triangle
Has one angle that is 90 degrees
Obtuse Triangle
One angle is an obtuse angle
Equilateral Triangle
All sides are congruent (same size)
Isosceles Triangle
At lease two sides are congruent
Scalene Triangle
Trapezoid
No sides are congruent (same size)
Quadrilateral with one pair of
parallel sides
Quadrilateral
Four sided closed shape (polygon)
The sum is 360 degrees
Parallelogram
Quadrilateral with opposite sides the
same length opposite sides parallel
Rhombus
Square
Rectangle
Circle
Quadrilateral in which all sides are
the same length, opposite sides are
parallel, and all sides are congruent
(Also classified as parallelogram)
A quadrilateral with all sides congruent,
all sides are the same length, and all
the angles are 90 degrees.
(Also classified as rhombus, rectangle
and parallelogram)
Quadrilateral with 4 right angles,
opposite sides are the same length
all angles are 90 degrees.
(Also classified as parallelogram)
closed plane figure made up of all points
the same distance from a point called the
center. It is named by the center.
Radius
Chord
Diameter
Central Angle
any line segment that connects
the center point to a point on
the circle (Plural radii)
Any line segment that connects
two points on the circle.
Any line segment that connects
two points in a circle.
angle whose vertex is the center of
the circle.
Arc
Semi Circle
Sector
part of the circle
connecting two points of the circle
arc that connects the endpoints of
a diameter
region bounded by two radii
and an arc.