Angle Vocabulary

__	1.	angle	A.	a figure formed by the intersection of two rays
__	2.	degree	B.	an infinite series of points moving in opposite directions
__	3.	line	C.	a location in space
__	4.	line segment	D.	part of a line with two endpoints
__	5.	point	E.	part of a line with one endpoint (half line)
__	6.	ray	F.	the point of intersection of two rays that form an angle
__	7.	vertex	G.	1/360 of a circle

__	8.	acute angle	A.	an angle formed by perpendicular rays (90^o)
__	9.	adjacent angles	B.	an angle formed by opposite rays (180^o)
__	10.	complementary angles	C.	an angle between 90^o and 180^o
__	11.	congruent angles	D.	angles that share a common ray
__	12.	obtuse angle	E.	an angle between 0^o and 90^o
__	13.	right angle	F.	angles that combine to make a straight angle-sum of 180^o
__	14.	straight angle	G.	angles that share a common vertex but have opposite rays
__	15.	supplementary angles	H.	angles that combine to make a right angle-sum of 90^o
__	16.	vertical angles	I.	angles with the same size

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