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
On worksheet problem 2,
m/_a = ?
What is 127 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
On worksheet problem 1,
m/_b = ?
What is 112 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
Part of a line consisting of an endpoint an all the points on the line that are on one side of the endpoint
What is a ray?
300
On worksheet problem 7,
m/_b = ?
What is 54 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
Lines that do not lie in same plane and do not intersect
What are skew lines?
400
On worksheet problem 5,
m/_c = ?
What is 42 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
In a triangle, the inside angles that are not adjacent to an exterior angle.
What are remote interior angles?
500
On worksheet problem 6,
m/_b = ?
What is 55 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
A pair of _______ are always congruent, but congruent angles are not always _______.
(Same term goes in both blanks.)
What is a vertical angles? or
What are right angles?
600
On worksheet problem 3,
m/_a = ?
What is 35 degrees?