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Fill in the blank: Line segment has ____ endpoint
two
FInd the missing letter: P_IN_
O,T
A ray has ____ endpoint.
one
A line has no ______
endpoint
______ lines never meet each other.
parallel
Perpendicular lines meet at a ____ angle
right
How many types of angles?
four types
When the angle is 180 degree, it is a(an) _______ angle
straight
when the angle is smaller than 90 degree, it is a(an) ______ angle
acute
find the missing letter: I N T _ R S E_T I N G
E, C
when the angle is 110 degree,it is a(an) _____ angle
obtuse
