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;
31 Cards in this Set
- Front
- Back
|
isosceles triangle
|
as at least two congruent sides
|
|
|
point
|
is an exact location that has no size
|
|
|
straight line
|
measures exactly 180 degrees
|
|
|
rectangle
|
Parallelogram with four right angles. Opposite sides are parallel and congruent.
|
|
|
perpendicular
|
intersect to form 90 degree angles
|
|
|
quadrilateral
|
is a plane figure with four sides and four angles
|
|
|
plane
|
a flat surface that has no thickness and extends forever
|
|
|
line segment
|
is a part of a line made of two endpoints and all the points between them
|
|
|
obtuse triangle
|
has one obtuse angle
|
|
|
polygon
|
is a closed plane figure formed by three or more line segments
|
|
|
square
|
Rectangle with four congruent sides. All angles are right angles
|
|
|
trapezoid
|
Quadrilateral with exactly two parallel sides. May have two right angles.
|
|
|
right angle
|
measures exactly 90 degrees
|
|
|
equilateral triangle
|
has three congruent sides
|
|
|
parallel lines
|
are lines in the same plane that never insect.
|
|
|
parallelogram
|
opposite sides are parallel and congruent. Opposite angles are congruent
|
|
|
ray
|
is a part of a line that starts at an endpoint and extends forever in one direction
|
|
|
congruent angles
|
have the same measure
|
|
|
right triangle
|
has one right angle
|
|
|
obtuse angle
|
measures greater than 90 degrees and less that 180 degrees
|
|
|
angle
|
is formed by two rays with a common endpoint
|
|
|
vertical angles
|
are formed opposite each other when two lines intersect. These angles have the same measure, so the are congruent.
|
|
|
scalene triangle
|
has no congruent sides
|
|
|
adjacent angles
|
are side by side and have a common vertex. These angles may or may not be congruent
|
|
|
acute angles
|
measures greater than 0 degrees and less than 90 degrees.
|
|
|
complementary angle
|
are two angles whose measures have a sum of 90 degrees
|
|
|
supplementary angle
|
are two angles whose measures have a sum of 180 degrees
|
|
|
rhombus
|
parallelogram with four congruent sides. Opposite angles are congruent.
|
|
|
acute angle
|
angles measure less that 90 degrees and more than 0 degrees
|
|
|
line
|
is a straight path that has no thickness and extends forever
|
|
|
acute triangle
|
all angles are acute
|
