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17 Cards in this Set
 Front
 Back
Half of a whole is what percent of the whole?

50%


An ________ is formed by two rays that have a common endpoint. We call the common endpoint the _________.

angle
vertex 

A ________ describes a whole as if there were 100 parts.

percent


When there is no chance of confusion, an angle may be named with only one letter. If there is a chance for confusion, we use three letters to name the angle. The _________ must be the center letter in the group of three letters.

vertex


An angle smaller than a right angle is called an _________ angle.

acute


A _____ is a part of a line with one endpoint.

ray


An angle that is smaller than a straight angle but larger than a right angle is called an ________ angle.

obtuse


Lines that intersect and form "square corners" are called _______________ lines.

perpendicular


An angle that is formed by perpendicular lines is called a ________ angle.

right


A _____ is an infinite number of points extending in opposite directions without end.

line


In a fraction, the number below the bar is called the ____________ and tells how many equal parts are in the whole.

denominator


A _________ is a part of a line with two endpoints.

segment


An angle that forms a straight line is called a _________ angle.

straight


Two lines in the same plane that do not intersect and remain the same distance apart are called ____________ lines.

parallel


In a fraction, the number above the bar is called the ____________ and tells how many parts have been selected.

numerator


When we name a ray, the ________ must be listed first.

endpoint


If two lines cross, we say that they _____________.

intersect
