Geometry Honors True/False Semester

A plane has no thickness

true

collinear points are coplanar

true

planes have edges

false

two planes intersect in a line segment

false

two intersecting lines meet in exactly one point

true

points have no size

true

line xy can be denoted as line xy or line yx

true

the length of a line segment is ___________ negative

never

a coordinate can __________ be paired with a point on a number line

always

a bisector of a segment is __________ a line

sometimes

a ray __________ has a midpoint

never

congruent segments __________ have equal lengths

always

ray ab and ray ba denote the same ray

never

A given triangle can lie in more than one plane

false

any two points are collinear

true

two planes can intersect in only one point

false

two lines can intersect in two points

false

A postulate is a statement assumed to be true without proof

true

three points determine a plane

false

through any two points there is exactly one plane

false

through a line and a point not on a line there is one and only one plane

true

the converse of a true statement is sometimes false

true

only one counter example is needed to disprove a statement

true

properties of numbers cannot be used in geometric proofs

false

postulates are deduced from theorems

false

every angle has only one bisector

true

vertical angles __________ have a common vertex

always

two right angles are ______________ complementary

never

right angles are ___________ vertical angles

sometimes

vertical angles ______________ have a common supplement

always

perpendicular lines ______________ lie in the same plane

sometimes

two lines are perpendicular if they ____________ form congruent adjacent angles

always

perpendicular angles __________ form 60 degree angles

never

if the exterior sides of two adjacent angles are perpendicular then the angles are never supplementary

never