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Mrs. O'Hanley Geometry Vocab

Terms in this set (16)

adjacent angles
two angles with a common vertex and common side, they share a ray
complementary angles
two angles totaling 90 degrees
supplementary angles
two angles totaling 180 degrees
perpendicular lines
two lines that intersect to form a right angle
parallel lines
two lines that are the same distance from eachother and that do not intersect
vertical angles
the angles formed by two intersecting lines, they are opposite and equal
acute
angle less than 90 degrees
right
angle exactly 90 degrees
obtuse
angles greater than 90 degrees
congruent
exactly the same shape and size
straight angle
180 degrees
The angles of a triangle total how many degrees?
180
The degrees of a circle total how many degrees?
360
diameter
distance across a circle
radius
1/2 the distance across a circle
circumference
distance around a circle
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