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# Geometry Vocabulary1

### first semester geometry vocabulary

the product of multliplying a number by itself square
a number that was squared square root
a number with a square root symbol radical
a triangle with one right angle right triangle
each of the sides that form the right angle of a right triangle leg
the side opposite the right angle of a right triangle hypotenuse
formula for finding the a missing side of a right triangle a formula for right triangles pythagorean theorem
a triangle with 3 acute angles an acute triangle
a triangle with one obtuse angle an obtuse triangle
a triangle with all angles equal equiangular triangle
the angle formed by extending one side of a triangle exterior angle
an interior angle of a triangle not adjacent to the given exterior angle remote interior angle
a triangle with no sides congruent scalene triangle
a triangle with two sides congruent isosceles triangle
a triangle with all sides congruent equilateral triangle
lines that lie in the same plane and do not intersect parallel lines
angles on the same side of the transversal; one is interior, one is exterior corresponding angles
a line that intersects two different lines at two different points transversal
interior angles that are on the same side of the transversal same-side interior angles
two lines that intersect to form a right angle perpendicular lines
interior angle that are on opposite sides of the transversal alternate interior angles
a geometric figure formed by two rays with a common endpoint angle
a tool used to measure angles protractor
an angle less than 90 degrees acute angle
an angle equal to 90 degrees right angle
an angle that is greater than 90 degrees obtuse angle
an angle that is equal to 180 degrees and forms a straight line straight angle
two angles that have a common vertex and a common ray adjacent angles
two angles whose measures have a sum of 90 degrees complimentary angles
two angles whose measure have a sum of 180 degrees supplementary angles
angles that have the same measure congruent angles
angles formed by intersecting lines vertical angles
a ray that divides and angle into 2 congruent angles angle bisector
a statement that is accepted without proof postulate
a location space point
a geometric figure made up of many points and extends endlessly in both directions line
part of a line, it has two endpoints line segment
part of a line, it has only one endpoint ray
a flat surface that extends endlessly in all directions plane
line segments that have the same length congruent line segments
the point that divides a line segment into 2 congruent parts midpoint
a lines that intersects a line segment at its midpoint bisector
points on the same line collinear points
a statement that can be proved theorem
Created by: thursh