Geometry Vocabulary
Geometry Vocabulary
Geometry Vocabulary
Geometry Vocabulary
Geometry Vocabulary
100
goes on without end in both directions
What is a line?
100
a line segment that connects the center of a circle to any point on the circle
What is a radius?
100
a triangle with all sides a different length
What is a scalene triangle?
100
a simple closed plane figure made up of three or more line segments
What is a polygon?
100
lines that meet or cross at a common point
What are intersecting lines?
200
a four-sided, four-angled polygon
What is a quadrilateral?
200
an angle that measures exactly 180'
What is a straight angle aka a line?
200
a figure that is formed by two rays with the same endpoint
What is an angle?
200
lines that lie in the same plane and DO NOT intersect - they are always the same distance apart
What are parallel lines?
200
the point at either end of a line segment or the beginning point of a ray
What is an endpoint?
300
the distance around the outside of a circle - sort of like a perimeter
What is a circumference?
300
a portion of a line that begins at an endpoint and continues without end in one direction
What is a ray?
300
a triangle that has three equal length sides and three equal angles
What is an equilateral triangle?
300
a closed figure in which every point is the same distance from the center point
What is a circle?
300
an angle that measures more than 90' but less than 180'
What is an obtuse angle?
400
two lines or line segments that cross or meet to form right angles
What are perpendicular lines?
400
having the same size and shape
What is congruent?
400
a line segment that connects two points on a circle and passes through the center point
What is a diameter?
400
part of a line between two endpoints
What is a line segment?
400
a quadrilateral with two parallel sides
What is a trapezoid?
500
an angle that measures less than 90'
What is an acute angle?
500
a triangle that has two equal sides and two equal angles
What is an isosceles triangle?
500
an angle made when two line segments or rays meet to form a square 90' corner
What is a right angle?
500
a quadrilateral in which both pairs of opposite sides are parallel
What is a parallelogram?
500
a three-sided, three-angled polygon
What is a triangle?
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