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Transcript of Geometry
3-D figure with two parallel and congruent circles
as bases. A decagon is any 10-sided polygon. Diameter is a
line segment that
touches two points
on a circle and runs
through the middle of
the circle. An equilateral triangle is a triangle with all congruent sides and angles. A chord is a line segment that touches two points of a circle, but doesn't have to go through the center of the circle. A hexagon is a six-sided figure. Intersecting line segments are line segments that meet or cross. An isosceles triangle is a triangle with two congruent sides and two congruent angles. A line of symmetry
is an imaginary line that splits a shape
in half so that both
sides are congruent. A line segment is a portion of a line with two endpoints. An obtuse angle is an angle that is greater than 90 degrees. An obtuse triangle is a triangle with one obtuse angle. An octagon is an eight-sided polygon. Parallel lines are line segments that never meet. A parallelogram is
a quadrilateral with opposite sides that are parallel. A pentagon is any five -sided polygon. Perpendicular lines are line segments that cross or meet at a right angle. A polygon is a closed figure with all straight sides. A radius is a line segment extending from the center to the outside of a circle. A rectangle is a quadrilateral with opposite sides congruent and all right angles. A rectangular prism is a 3-D figure with two congruent rectangular bases with four rectangular sides. A rhombus is a quadrilateral with four congruent sides. A right angle is an angle that measures exactly 90 degrees. A right triangle is a triangle with one right angle. A scalene triangle is a triangle with no congruent sides. Similar figures are figures that have the same shape, but not the same size. A sphere is a 3-D figure that is made up of points equidistant from the center. A square is a quadrilateral with four congruent sides and four right angles. A square pyramid
is a 3-D shape with a square base and four triangular sides that share a common
vertex. A trapezoid is
with only one set of parallel line segments. A triangular prism is a 3-D figure with two congruent triangular bases connected by three rectangular
sides. A vertical line is a line that is straight up and down.