Section 1
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congruent
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Last updated
6 years ago
Date created
Mar 1, 2020
Cards (52)
Section 1
(50 cards)
congruent
Having the same size and shape
straight angle
an angle that measures 180 degrees
decagon
10 sided polygon
rectangle
A parallelogram with four right angles
polygon
A closed plane figure made up of line segments
parallelogram
A quadrilateral with two pairs of parallel sides
intersecting
lines that cross at one point
trapezoid
A quadrilateral with exactly one pair of parallel sides
equivalent
equal
rhombus
a parallelogram with 4 congruent sides
right triangle
A triangle that has a 90 degree angle.
polyhedron
A three-dimensional figure with faces that are polygons
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
pentagon
5 sided polygon
radius
a straight line from the center to the circumference of a circle or sphere.
similar shapes
Same shape but not the same size: angles are congruent and the sides are proportional
2 dimensional
flat shape that has 2 dimensions of length and width
obtuse triangle
A triangle where one angle measures over 90 degrees.
perpendicular
Intersecting at or forming right angles
scalene triangle
A triangle with no congruent sides
acute angle
an angle that measures less than 90 degrees
area
The number of square units required to cover a surface.
reflex angle
An angle greater than 180 degrees (but less than 360)
symmetry
having the same shape, size, and position on both sides of a dividing line
octagon
a polygon with 8 sides
perimeter
the distance around a figure
regular polygon
a polygon with all sides and all angles equal
apex
the highest vertex on a polyhedron
nonagon
9 sided polygon
isosceles triangle
A triangle with 2 congruent sides
heptagon
7 sided polygon
square
A parallelogram with four congruent sides and four right angles.
prism
A solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms
right angle
an angle that measures 90 degrees
3 dimensional
Having 3 dimensions, height, width, and depth.
circumference
the distance around a circle
chord
A segment whose endpoints lie on a circle
hexagon
a polygon with 6 sides
base
a special face on a polyhedron
quadrilateral
4 sided polygon
parallel
two or more lines that run in the same direction and do not touch.
triangle
A polygon with three sides.
circle
a round shape that has no beginning or end
dodecagon
12 sided polygon
square
A parallelogram with four congruent sides and four right angles.
equilateral triangle
A triangle with three congruent sides
vertex
A point where two or more straight lines meet.
face
A flat surface of a polyhedron
irregular polygon
a polygon with sides that are not all congruent or angles that are not all congruent
diameter
A straight line passing from side to side through the center of a circle or sphere.
Section 2
(2 cards)