Lines, Points and more
More Lines, Points and more
Angles
More Angles
Triangles
100
a straight path of points that goes on forever in two directions
What is a line?
100
part of a line with one endpoint extending forever in only one direction
What is a ray?
100
an angle with a measure between 0 degrees and 90 degrees
What is an acute angle?
100
a pair of angles formed by intersecting lines, the angles have no side in common, they are congruent
What are vertical angles?
100
a triangle with three acute angles
What is an acute triangle?
200
line segments that are the same length
What are congruent line segments?
200
intersecting lines that form right angles
What are perpendicular lines?
200
the common endpoint of two rays that form an angle
What is a vertex?
200
two angles whose measures add up to 180 degrees
What are supplementary angles?
200
a triangle with no congruent sides
What is a scalene triangle?
300
an exact location in space
What is a point?
300
the point that divides the segment into two segments of equal length
What is midpoint?
300
an angle with a measure between 90 degrees and 180 degrees
What is an obtuse angle?
300
two angles whose measures add up to 90 degrees
What are complementary angles?
300
a triangle with at least two congruent sides
What is an isosceles triangle?
400
part of a line that has two endpoints
What is a line segment?
400
lines that have exactly one point in common
What are intersecting lines?
400
an angle which measures 180 degrees
What is a straight angle?
400
a pair of angles with a common vertex and a common side but no common interior points
What are adjacent angles?
400
a triangle with one right angle
What is a right triangle?
500
lines in the same plane that do not intersect
What are parallel lines?
500
a flat surface that extends forever in all directions
What is a plane?
500
an angle which measures 90 degrees
What is a right angle?
500
angles that have the exact same measure
What are congruent angles?
500
a triangle with an obtuse angle
What is an obtuse triangle?
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