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two lines that cross at a right angle
perpendicular lines

two lines that cross NOT making a right angle
intersecting lines

What type of angle is this?
right angle

What is the name of this type of angle?
acute angle

what type of angle in this?
obtuse angle

what is the name of these?
line segments CD and PN

what do we call these?
line AB

these shapes are...
congruent

What are these called?
Ray AB and Ray HG

What is Mrs. Pierce's son's name?
Doren

