Angle Vocabulary Flashcards
lines that will never cross and are the same distance apart and may go on forever (will not cross if they go on and on.
parallel
part of a circle that represents an angle between two intersecting lines.
arc
when lines intersect they form angles and angles are the spaces or shapes that are formed between the interseeting lines- They meet at a Name angles by names of points
angles
lines that form square corners when they intersect they form right angles
perpendicular
lines that form it are perpendicular and the angles measure 90%
right angles
when lines cross they cross at a point called an intersection.
intersection
angles that are less than a right angle; less than 90%.
acute angles
Angles greater than a right angle; greater than 90%.
obtuse angles
straight line- two rays pointing in opposite directions.
Straight angle
two angles that form a right angle are called complementary angles(90%
complementary angles
two angles combine to form a straight angle
supplementary angles
the point where two rays meet.
vertex
having the same measure
congruent
a measurement used to measure angles (small amount)
degrees
a tool that measures angles
protractor
a plane figure that has three straight sides and three angles
triangle
a triangle that has one obtuse angle greater than 90 degrees
obtuse triangle
a triangle that has all angles that are acute (less than 90 degrees)
acute triangle
a triangle that has one right angle
right triangle
a collection of points that extends in both directions that goes on without end
line
a part of a line with two endpoints
line segment
a starting point and extends in one direction without an end
ray
