Key Terms Understanding Geometry

Two lines that form a right angle at their point of intersection are called _____________________.

• Collinear Lines

• Parallel Lines

• Perpendicular Lines

• Line Segments

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Line k is a _________________.

• Midpoint

• Segment Bisector

• Perpendicular Bisector

• Angle Bisector

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CCSS.HSG.CO.A.1

Which of these have slopes that are opposite reciprocals (signs that are opposites AND fractions that are flipped)?

• Interesecting

• Parallel

• Perpendicular

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What are the points called that represent the ends of a line segment or ray?

• Midpoints

• Vertices

• Endpoints

• Intersections

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Lines that never meet or cross and stay the same distance apart

• perpendicular lines

• parallel lines

• intersecting lines

• transversal

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What kinds of lines never intersect?

• Line Segments

• Perpendicular Lines

• Parallel Lines

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lines that intersect to form 4 right angles are called?

• Skew

• Parallel

• Perpendicular

• none of the above

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A point on a line segment that divides it into two congruent segments.

• Vertex

• Transversal

• Midpoint

• Center Point

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CCSS.HSG.GPE.B.6

What term describes the point where two or more lines meet?

• line segment

• midpoint

• intersection

• linear pair

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CCSS.HSG.CO.A.1