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Geometry-Chapter 4

Geometry-Chapter 4 Vocabulary

a polygon with three sides triangle
a triangle with no congruent sides scalene triangle
a triangle with at least two congruent sides isosceles triangle
a triangle with three congruent sides equilateral triangle
a triangle with all three internal angles measuring between 0 and 90 degrees acute angle
a triangle with one internal angle measuring 90 degrees right triangle
a triangle with one internal angle with measuring between 90 and 180 degrees obtuse triangle
a triangle with three conguent angles equiangular triangle
when the sides of a triangle are extended, the angles that are adjacent to the interior angles exterior angles
when the sides of a triangle are extended, the three original angles of the triangle interior angles
a statement that can be proved easily using a theorem corollary
two geometric figures that have exactly the same size and shape congruent figures
A pair of sides or angles that have the same relative position in two congruent or similar figures corresponding parts
a type of proof that uses arrows to show the flow of a logical argument flow proof
an operation that moves or changes a geomeric figure in some way to produce a new figure transformation
In a right triangle, the side opposite the right angle hypotenuse
In a right triangle, the sides adjacent to the right angle legs
The two congruent sides of an isosceles triangle legs
The noncongruent side of an isosceles triangle base
The two angles that are adjacent to the base of an isosceles triangle base angles
A transformation that uses a line of reflection to create a mirror image of the original figure reflection
A transformation in which a figure is turned about a fixed pont called the center of rotation rotation
A transformation that moves every point of a figure the same distance in the same direction translation
In a transformation the term often used to refer to the original figure preimage
The new figure that is produced in a transformation image
A congruent transformation where all side lengths and angle measurements a remain the same isometry
The angle opposite the base side of an isosceles triangle. vertex angle
Created by: aelohaus