Unit 1 Vocabulary
An exact location in space, with no size or shape
If ∠A≅∠B, and ∠B≅∠C, then ∠A≅∠C, what is the transitivie property ?
Transitive Property of Congruence
180 degrees
An angle with a measure of exactly 90 degrees
Right Triangle
What is the y intercept and slope of:
y = 6x + 2
y intercept = 2
slope is 6/1
A measurable part of a line between two endpoints
Line Segment
This divides an angle into two equal parts
angle bisector
A triangle with three congruent sides, and three congruent angles
EQUILATERAL Triangle
An angle with a measure greater than 0 degrees and less than 90 degrees
Acute Angle
What is the y intercept and slope of:
y = -x
y intercept = 0
slope = -1/1
Two or more lines, segments, or rays in the same plane that will never intersect
Parallel Lines
These types of lines form right angles
Perpendicular lines
DAILY DOUBLE A triangle with two congruent sides, and two congruent angles
ISOSCELES Triangle
An angle with a measure greater than 90 degrees and less than 180 degrees
Obtuse Angle
If the two lines are parallel, what would the slope be for the 2nd line:
y = 2x +1
y = ____ x +1
Slope would be 2 (its the same as first equation)
Two lines, segments, or rays that intersect to form a right angle (90 degrees).
Perpendicular
DAILY DOUBLE this type of statement can be written in reverse.
Example:
If ∠A≅∠B, then ∠B≅∠A
congruence statement
SSS, SAS, ASA, AAS, HL are all ways to prove triangles are what ?
Congruent
DAILY DOUBLE An angle with a measure of exactly 180 degrees
Straight Angle
If the two lines are perpendicular, what would the slope be for the 2nd line:
y = 2x + 1
y =_____ x+1
slope would be -1/2 (its the inverse of the slope of the 1st equation)
The point of intersection, where two sides of an angle meet
Vertex
If two angles form a linear pair, they are what ?
supplementary
If we know two triangles are congruent, then we know that each pair of corresponding parts are also congruent.
What does CPCTC stand for ?
Corresponding Parts of Congruent Triangles are Congruent
Two or more angles with equal measure
Congruent Angles
y - 8 = 1/3 (x - (-4))
What are the values for X and Y
x = -4
y = 8