Unit 1.1-1.5 quiz Flashcards
study study study
vertical angles
two angles across from each other on intersecting lines. They are always congruent
adjacent angles
two angles that are next to each other and share a common side
complementary angles
any two angles whose sum is 90 degrees
supplementary angles
any two angles whose sum is 180 degrees
linear pair
two angles that are adjacent and supplementary an form a straight line
Do complementary and supplementary angles have to be congruent
no
Angle def.
Formed by to rays that share a common endpoint (vertex)
Angle Addition Postulate
2 angles add up to whole
Angle bisector def.
a ray that cuts an angle into two equal angles
formula for fractional distance
x= k ( x2 - x1) +x1
Midpoint
the point that divides a segment into two congruent or equal parts
Segment Bisector
A point, ray, line, or plane that intersects a segment at its midpoint
Ruler Postulate formula
AB= I a-b I
Line segments that have the same length are called
congruent segments
Always, Sometimes, Never
if angle 6 = angle 7, then the angles are vertical
sometimes
Always, Sometimes, Never
if angle 6 and angle 7 form a linear pair and angle 6 is a right angle, then angle 7=90 degrees
Always
Always, Sometimes, Never
If two angles are congruent and supplementary, then they form a linear pair
sometimes
Always, Sometimes, Never
If two angles are adjacent and form a right angle, then they are congruent
sometimes
