Vocab - define & draw
Parallel Lines
Angles in Triangles
Angle Pairs
More Vocab
Angle Hunting
100
two coplanar lines that never intersect
What are parallel lines?
100
m/_2=107^@
m/_4=?
Justify
What is 107 degrees? Vertical angles are congruent.
100
The sum of all interior angle measures in a triangle.
What is 180 degrees?
100
adjacent angles whose sides form a line
What is a linear pair?
100
Lines that intersect at right angles
What are perpendicular lines?
100
If angle 4 is 71 degrees, angle 2 will be this amount and why
What is 71 degrees?
200
Two angles whose sum is 180 degrees
What are supplementary angles?
(or What is a linear pair?)
200
m || n
m/_3=71^@
m/_5= ?
Justify.
What is 71 degrees?
lines are parallel -> alt-interior angles congruent
200
Solve for ?
What is 58 degrees?
200
The congruent non-adjacent angles formed by two intersecting lines
What are vertical angles?
200
An angle whose measure is less than 90 degrees
What is an acute angle?
200
If angle 2 is 64 degrees, angle 6 will be this amount and why
What is 64 degrees?
300
Any two angles that have the same measure.
What are congruent angles?
300
m || n
m/_3=64^@
m/_6=?
Justify.
What is 116 degrees?
lines are parallel -> ss interior angles supplementary
300
Solve for ?
what is 30 degrees?
300
If this pair of angles is congruent, you know lines are parallel.
What are corresponding angles? or
What are alternate-interior angles? or
What are alternate-exterior angles?
300
The property where if A=B and B=C, A=C
What is the transitive property?
300
If angle 8 is 58 degrees, angle 5 will be this amount and why
What is 122 degrees?
400
A line that intersects two or more lines at distinct points
What is a transversal?
400
m/_5=70 and
m/_7=4x-6
Solve "for " x.
what is x=19?
400
Solve for x.
What is -11?
400
These angles are supplementary when lines are parallel.
What are same-side interior angles?
(reminder C)
400
Angles that are in the same position in two different intersections
What are corresponding angles?
400
If angle 1 is 111 degrees, angle 7 will be this amount and why
What is 111 degrees?
500
A pair of angles whose measures add up to 90 degrees.
What are complementary angles?
500
m/_1=3x-25
m/_2=2x
m/_1=?
What is 98 degrees?
500
The measures of the three angles in the triangle are ____, ____ and ____.
What are 30, 60, and 90?
500
When a transversal intersects two lines, this pair of angles are both inside angles, they are on opposite sides of transversal and they are not a linear pair.
What are alternate interior angles?
(reminder: Z)
500
A property where a side or angle is congruent to itself
What is the reflexive property?
500
If angle 5 is 127 degrees angle 2 will be this amount
What is 53 degrees?
600
Two coplanar angles that share a side and a vertex (but have no common interior points)
What are adjacent angles?
600
m || n
m/_7=2x
m/_8=4x
m/_2= ?
what is 120 degrees?
600
solve for x
What is x=-6?
600
This pair is in matching positions above or below the transversal and is on the same side of the transversal.
What are corresponding angles?
(reminder: F)
600
The statement that tells you that if two triangles are congruent then all the matching parts must be congruent as well (Abbreviated)
What is CPCTC?
600
If angle 8 is 63 degrees, then angle 3 will be this amount
What is 117 degrees?