Geometry Lines and Angles
parallel lines 
acute angle
intersecting lines
perpendicular lines
 perpendicular lines
acute angle
obtuse angle
parallel lines
parallel lines
 intersecting lines 
right angle
perpendicular lines
straight angle
 acute angle 
right angle
obtuse angle
 right angle 
obtuse angle
acute angle
parallel lines
parallel lines
point
line segment
 ray 
line segment
 line
ray
perpendicular lines
ray
 line segment 
acute angle
intersecting lines
intersecting lines
 parallel lines 
ray
acute angle
intersecting lines
right angle
perpendicular lines
 parallel lines
obtuse angle
left angle
acute angle
 right angle 
right angle
perpendicular lines
 acute angle 
obtuse angle
 obtuse angle 
right angle
straight angle
acute angle
right angle
ray
 straight angle
acute angle
acute angle
 right angle 
obtuse angle
straight angle
parallel lines 
acute angle
intersecting lines
perpendicular lines
right angle
perpendicular lines
 acute angle 
obtuse angle
 perpendicular lines
acute angle
obtuse angle
parallel lines
right angle
acute angle
straight angle
 obtuse angle
obtuse angle
 acute angle
right angle
line segment
straight angle
perpendicular lines
 intersecting lines
parallel lines
right angle
line
 ray
parallel lines
line segment
obtuse angle
ray
 straight angle 
parallel lines
 perpendicular lines 
straight angle
ray
acute angle
 right angle
straight angle
obtuse angle
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