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Geometry Vocabulary

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Section 1

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Bisect

Front

1 / 39

Geometry Math

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Date created

Mar 1, 2020

Cards (39)

Section 1

(39 cards)

Bisect

Front

to divide into two equal parts

Back

Ray

Front

A part of a line, with one endpoint, that continues without end in one direction

Back

Obtuse angle

Front

Measures more than 90 degrees and less than 180 degrees

Back

Transversal

Front

a line that intersects two or more lines

Back

Trigonometry

Front

Triangle Measurement

Back

Line

Front

A straight, unbroken set of points that goes on forever. It has infinite length, but no thickness.

Back

Perpendicular lines

Front

Intersect at a right angle

Back

Congruent figures

Front

Figures that have the same size and shape

Back

Linear pair

Front

Two adjacent angles that form a straight line

Back

Same side interior angles

Front

The two angles that are inside (interior) the parallel lines and are on the same side of the transversal Are SUPPLEMENTARY (add up to 180 degrees)

Back

Midpoint

Front

A point that divides a segment into two congruent segments

Back

Net

Front

A 2-D diagram that you can fold to form a 3-D figure that shows all surfaces in one view

Back

Complementary angles

Front

Angles that have a sum of 90 degrees

Back

Segment

Front

A part of a line with two endpoints.

Back

Adjacent angles

Front

Two angles with a common side and vertex

Back

Exterior angle

Front

An angle formed by one side of a polygon and the extension of an adjacent side

Back

Segment bisector

Front

A point, line, ray, or segment that divides a segment into two congruent segments

Back

Alternate exterior angles

Front

Angles that lay outside the parallel lines and are on opposite sides of the transversal; They are congruent.

Back

Hypotenuse

Front

The side opposite the right angle in a right triangle. The longest side of a right triangle.

Back

Polygon

Front

A closed figure formed by three or more line segments

Back

Coplanar

Front

Points, lines, or segments that lie on the same plane

Back

Supplementary angles

Front

Angles that have a sum of 180 degrees

Back

Acute angle

Front

Measures less than 90 degrees

Back

Vertical angles

Front

Two congruent angles that are across from each other with sides as opposite rays

Back

Congruent

Front

Having the same measure

Back

Collinear points

Front

A set of points that lie on the same line

Back

Alternate interior angles

Front

inside the parallel lines, opposite sides of the transversal

Back

Opposite rays

Front

Two rays that share an endpoint and extend in opposite directions to form a line

Back

Right angle

Front

Measures exactly 90 degrees

Back

Equilateral Triangle

Front

A triangle with three congruent sides

Back

Angle of Depression

Front

The angle formed by a horizontal line and the line of sight to an object below the horizontal line

Back

Same side exterior angles

Front

two exterior angles on the same side of the transversal

Back

Isosceles Triangle

Front

A triangle that has 2 equal sides.

Back

Parallel lines

Front

lines in the same plane that never intersect

Back

Pythagorean Theorem

Front

a²+b²=c²

Back

Perpendicular bisector

Front

A segment, ray, line, or plane that is perpendicular to a segment at its midpoint

Back

Corresponding angles

Front

Angles that have the same position on two different parallel lines cut by a transversal.

Back

Angle bisector

Front

A ray that divides am angle into two congruent angles

Back

Angle of Elevation

Front

the angle formed by a horizontal line and the line of sight to an object above the horizontal line

Back