math: angle relationships
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514 Terms
angles reasoning
vertically opposite angles are equal
angles on a right angle add to 90 degrees
angles on a straight line add to 180 degrees
angles in a revolution add to 360 degrees
corresponding angles are equal on parallel lines
alternate angles are equal on parallel lines
co-interior angles sum to 180 ion parallel lines
what is a plane
a flats surface that extends indefinitely
define collinear points
points that lie on a single line
what are three or more lines that intersect at the same point called
concurrent
what is a line segment
part of a line with a fixed length and end point(s) also called an interval
what is a ray
a line with one end point passing through another point it extends indefinitely in one direction
what is a vertex
a vertex is an intersection point where 2 rays r lines meet
what is a adjacent angle
angles that are side by side that share a vertex
what is a complementary angle
two adjacent angles that add to 90 degrees
what is a supplementary angle
two adjacent angles that add to 180 degrees
what is a revolution
angles with a sum of 360 degrees
what are corresponding angles
pairs of angles that occupy the same relative position where a transversal line crosses 2 other lines
what is an alternate angles
the angles on opposite sides of the tranversal and inside the two other lines
co-interior angles
on the same side of the transversal and inside the other two lines
what happens when a transversal crosses two parallel lines
corresponding angles are equal
alternate angles are equal
co-interior angles are supplementary