High School Geometry

Word List with 23 words
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Words in This List

acute angle
angle that measures less than 90 degrees
altitude
noun
shortest distance between the base of a figure and its top
angle bisector
noun
line or ray that divides an angle in half
central angle
noun
angle in a circle with vertex at the center of circle
centroid
noun
point at which the three medians intersect in a triangle
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circumcenter
noun
point of intersection of the perpendicular bisectors of the sides
concurrent
adjective
lines or curves that intersect at a single point
congruent
adjective
exactly equal in size and shape
coordinates
noun
pair of numbers giving the location of a point
diameter
noun
line segment between two points on the circle or sphere which passes through the center
hypotenuse
noun
side of a right triangle opposite the right angle
incenter
noun
point where the three angle bisectors meet
orthocenter
noun
point at which the three altitudes of a triangle intersect
platonic solid
noun
solids which have faces that are all congruent, regular polygons
point
noun
geometric figure formed at the intersection of two distinct lines
polyhedron
noun
solid with no curved surfaces or edges
pythagorean theorem
theorem that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
rhombus
noun
quadrilateral that has all four sides congruent or equal
rotation
noun
transformation in which a plane figure turns around a fixed center point
scalene triangle
noun
triangle that has three unequal sides
transversal
noun
line that cuts across a set of lines or the sides of a plane figure
trapezoid
noun
quadrilateral having a pair of opposite sides which are parallel
vertex
noun
corner point of a geometric figure

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