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Geometry Vocabulary

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40 cards

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Section 1

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cylinder

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Geometry Math

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Last updated

6 years ago

Date created

Mar 1, 2020

Cards (40)

Section 1

(40 cards)

cylinder

Front

A solid figure with two congruent and parallel circular bases

Back

radius

Front

A length that is half the diameter of a circle; the distance from the center of the circle to the circle itself

Back

scalene triangle

Front

A triangle with sides of different lengths and no two angles are the same

Back

straight angle

Front

An angle that measures 180 degrees

Back

collinear

Front

points that lie on the same line

Back

hexagon

Front

A polygon with six sides.

Back

octagon

Front

An eight-sided polygon

Back

complementary angle

Front

Two angles whose sum equals 90 degrees

Back

ray

Front

portion of a line that starts at a given point and goes off in a certain direction forever, to infinity.

Back

isosceles triangle

Front

A triangle with two equal sides and two equal angles

Back

quadrilateral

Front

A polygon that has four sides

Back

segment bisector

Front

a segment or line or plane that intersects a segment at its midpoint

Back

polygon

Front

Three or more line segments in a plane that forms a closed figure. The line segments never cross but meet at their endpoints.

Back

angle bisector

Front

a ray that divides an angle into two congruent parts

Back

area

Front

Surface space that is measured in square units

Back

linear pair

Front

a pair of adjacent angles formed by intersecting lines. also are supplementary

Back

supplementary angles

Front

Two angles whose sum is 180 degrees

Back

adjacent angle

Front

two angles that share a common side and vertex

Back

pyramid

Front

A solid figure that has triangles for its sides and a polygon as its base

Back

parallelogram

Front

a quadrilateral with two pairs of congruent, parallel sides

Back

vertex (vertices - plural)

Front

The point of intersection for two sides of a plane figure, three sides of a solid figure, or the endpoints of two rays that form an angle.

Back

precision

Front

the smallest unit on a measuring tool

Back

vertical angles

Front

two opposite, congruent angles formed by intersecting lines, non-adjacent

Back

prism

Front

a solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms.

Back

coplanar

Front

points that lie on the same plane

Back

right triangle

Front

A triangle with one right angle

Back

circumference

Front

The distance around a circle (the perimeter of a circle)

Back

pentagon

Front

A polygon with five sides

Back

perimeter

Front

The distance around a figure

Back

equilateral triangle

Front

A triangle that has three equal sides and three equal angles

Back

congruent

Front

Having the same size and shape

Back

similar figures

Front

Figures that have the same shape but different sizes; their sides are proportional, while their corresponding angles are equal

Back

obtuse angle

Front

An angle measuring more than 90 degrees and less than 180 degrees

Back

rhombus

Front

A parallelogram with all sides equal and congruent

Back

undefined terms

Front

points, lines, planes

Back

trapezoid

Front

A quadrilateral with one pair of parallel sides

Back

acute angle

Front

An angle measuring more than zero degrees and less than 90 degrees

Back

rectangle

Front

A parallelogram with four right angles

Back

reflection

Front

A mirror image of a figure shown over a line of reflection

Back

diameter

Front

A line segment that passes through the center of a circle and has its endpoints on the circle

Back