Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
acute angle
|
an angle less than 90 degrees
|
|
|
angle
|
the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet
|
|
|
congruent
|
when two figures are like this, they match exactly
|
|
|
correspondence
|
matching
|
|
|
hatch mark
|
marks used to show congruency on geometric shapes
|
|
|
line segment
|
the part of a line included between two points
|
|
|
noncongruent
|
when two figures are like this, they do not match exactly
|
|
|
obtuse angle
|
an angle greater than 90 degrees
|
|
|
polygon
|
A closed plane figure with three or more straight sides and angles
|
|
|
ray
|
a straight line extending from a point
|
|
|
right angle
|
an angle that is exactly 90 degrees
|
|
|
straight angle
|
an angle that is exactly 180 degrees; a straight line
|
|
|
vertex
|
a meeting point of two lines that form an angle
|
|
|
bisect
|
to cut in half or two
|
|
|
congruent
|
when two figures are like this, they match exactly
|
|
|
diagonal
|
a straight line joining two opposite corners of a square, rectangle, or other straight-sided shape
|
|
|
intersect
|
two non-parallel lines do this at the point where they touch
|
|
|
isosceles trapezoid
|
a trapezoid with congruent base angles
|
|
|
kite
|
quadrilateral figure having two pairs of equal adjacent sides
|
|
|
parallel
|
side by side and having the same distance continuously between them
|
|
|
parallelogram
|
a quadrilateral whose opposite sides are both parallel and equal in length
|
|
|
perpendicular
|
a straight line at right angles to another line
|
|
|
perpendicular bisector
|
a segment, line, or ray that is perpendicular to a segment at its midpoint.
|
|
|
plane figure
|
a figure all points of which lie in the same plane
|
|
|
quadrilateral
|
a four-sided polygon
|
|
|
rectangle
|
a parallelogram with four right angles
|
|
|
rhombus
|
a parallelogram with four equal sides
|
|
|
square
|
a plane figure with four equal straight sides and four right angles
|
|
|
trapezoid
|
a quadrilateral with only one pair of parallel sides
|
