18 terms

Geometry Vocabulary-

unit 3 terms

Terms in this set (...)

acute angle
an angle less than 90 degrees but more than 0 degrees
obtuse angle
an angle between 90 and 180 degrees
perpendicular lines
lines that intersect to form right angles
a location in space. It takes only one letter to name me.
line segment
a line that connect 2 points
part of a line with two endpoints
parallel lines
lines that will never meet;
lines that never intersect
The common endpoint of an angle, the point where two rays, lines or line segments meet to form an angle
lines, rays or segments that cross
right angle
an angle that measures 90 degrees
straight angle
an angle that measures 180 degrees
isosceles triangle
A triangle with two congruent sides
scalene triangle
A triangle with no congruent sides; no sides are equal
equilateral triangle
a triangle with 3 congruent sides
same shape and same size
right triangle
a triangle with one right angle
a straight path that extends infinitely from an endpoint
a straight path that extends infinitely in oppposite directions
a polygon with 4 sides and 4 angles