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Gravity
Terms in this set (39)
Collinear
Points that lie on the same line
Linear Pair
A pair of adjacent angles whose noncommon sides are opposite rays.
Supplementary angles
Two angles whose sum is 180 degrees
Vertical Angles
A pair of opposite congruent angles formed by intersecting lines
Angle addition postulate
If P is in the interior of <RST, then m<RSP + m<PST = m<RST
Segment addition postulate
If B is between A and C, then AB + BC = AC
Congruent
Having the same size and shape
Angle bisector
a ray that divides an angle into two congruent angles
Segment bisector
a segment, ray, line, or plane that intersects a segment at its midpoint
Midpoint
A point that divides a segment into two congruent segments
parallel lines
lines in the same plane that never intersect
triangle sum theorem
The sum of the measures of the interior angles of a triangle is 180 degrees
Line segment
A part of a line with two endpoints
Line
1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band.
transversal
a line that intersects two or more coplanar lines at different points
corresponding angles
Angles formed by a transversal cutting through 2 or more lines that are in the same relative position.
same side interior angles
two interior angles on the same side of the transversal
alternate interior angles
angles between 2 lines and on opposite sides of a transversal
alternate exterior angles
Angles that lie outside a pair of lines and on opposite sides of a transversal.
Acute triangle
A triangle that contains only angles that are less than 90 degrees.
Obtuse triangle
A triangle with one angle that is greater than 90 degrees.
Right triangle
a triangle with one right angle
Isosceles triangle
a triangle with at least two congruent sides
Equilateral triangle
A triangle with three congruent sides
Regular triangle
All congruent sides and angles
Scalene triangle
a triangle with no congruent sides
Vertex angle
The angle formed by the legs of an isosceles triangle.
slope intercept form of a line
y=mx + b (m is the slope, b is the y intercept point)
y-intercept
The point where the graph crosses the y-axis
SAS postulate
If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.
SSS postulate
If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.
AAS postulate
If two angles and a non-included side of one triangle are congruent to two angles and a non-included side of another, then the two triangles are congruent.
HL Postulate
If a hypotenuse and leg of one right triangle are congruent to the corresponding hypotenuse and leg of a second right triangle, then the triangles are congruent.
perpendicular lines
Lines that intersect to form right angles
adjacent angles
Two angles that share a common side and have the same vertex
coplanar
points that lie on the same plane
complementary angles
Two angles whose measures add to 90 degrees.
distance
How far it is from one point to another
ray, opposite rays
a part of a line that starts at one endpoint and extends forever
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