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17 Cards in this Set
- Front
- Back
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Angles whose measures are more than 0° and less than 90°
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acute angles
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The openings that are formed when two lines or line segments intersect.
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angles
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To share a common point or points.
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intersect
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A straight collection of points extending in opposite directions without end.
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line
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A part of a line with two distinct endpoints.
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line segment
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Angles whose measures are more than 90° and less than 180°
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obtuse angles
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Lines that stay the same distance apart; lines that do not cross.
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parallel lines
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Two lines that intersect at right angles.
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perpendicular lines
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ray
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A part of a line that begins at a point and continues without end in one direction.
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An angle that forms a square corner and measures 90°. It is is often marked with a small square.
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right angle
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A point of an angle, polygon, or polyhedron where two or more line, rays, or segments meet.
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vertex
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Which type of angle is this?
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acute
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Which type of angle are these?
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obtuse
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This is an example of what type of lines?
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perpendicular lines
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These lines are examples of what type of lines?
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parallel lines
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Which line is an example of a ray?
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A.
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How many vertices are there in this image?
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6.
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