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Holt Geometry Vocab Chapter 1 Flashcards

mrs taylor said that all the vocab will be on her final

this set is for chapter one only

Holt Geometry

Terms : Hide Images
594982738acute angleangle that measures greater than 0º and less than 90º
594982739adjacent anglestwo angles in the same plane with a common vertex and a common side, but no common interior points
594982740anglea figure formed by two rays, or sides, with a common endpoint
594982741angle bisectora ray that divides an angle into two congruent angles
594982742areathe number of non-overlapping square units of a given size that exactly cover the figure
594982743baseany side of a triangle
594982744betweenwhat is B, if AB+BC=AC ( I don't know how to write that but it is on page 14)
594982745bisectto divide
594982746circumferencethe distance around the circle
594982747collinearpoints that lie on the same line
594982748complementary anglestwo angles whose measure have a sum of 90º
594982749congruent anglesangels that have the same measure
594982750congruent segmentssegments that have the same length
594982751constructiona way of creating a figure that is more precise
594982752coordinate planea plane that is divided into four regions by a horizontal line (x-axis) and a vertical line (y-axis)
594982753coplanarpoints that lie on the same plane
594982754degreethere are 360º in a circle, so one _______ is 1/360 of a circle
594982755diametera segment that passes through the center of the circle and whose endpoints are on the circle
594982756distancethe absolute value of the difference of the coordinates
594982757endpointa point at one end of a segment or the starting point of a ray
594982758exterior of an anglethe set of all points outside the angle
594982759heighta segment from a vertex that forms a right angle with a line containing the base
594982760hypotenusethe side across from the right angle that stretches from one leg to the other ( in a right triangle
594982761imagethe resulting figure in a transformation
594982762interior of an anglethe set of all points between the sides of the angle
594982763legthe two sides that form the right angle (in a right triangle)
594982764lengththe distance between a and b
594982765linean undefined term in geometry, that is a straight path that has no thickness and extends forever
594982766linear paira pair of adjacent angles whose non-common sides are opposite rays
594982767measuredangles are ___________ in degrees
594982768midpointthe point that bisect the segment into two congruent segments
594982769obtuse angleangle that measures greater than 90º and less than 180º
594982770opposite raystwo rays that have a common endpoint and form a line
594982771perimeterthe sum of the side lengths of the figure
594982772planean undefined term in geometry, it is a flat surface that has no thickness and extends forever
594982773pointundefined term in geometry, has a location but no size
594982774postulatea statement that is accepted as true without proof
594982775preimagethe original figure in a transformation
594982776radiusa segment whose endpoints are the center of the circle and a point on the circle
594982777raya part of a line that starts at an endpoint and extends forever in one direction
594982778reflectiona transformation across a line, flip
594982779right angleangle that measures 90º
594982780rotationa transformation about a certain point, turn
594982781segmentthe part of the line consisting of two points and all points between them
594982782segment bisectorand ray, segment, or line that intersects a segment at its midpoint
594982783straight angleformed by two opposite rays and measures 180º
594982784supplementary anglestwo angles whose measures have a sum of 180º
594982785transformationa change in the position, shape, or size of a figure
594982786translationa transformation in which all the points of a figure move the same distance in the same direction, slide
594982787undefined termbasic figures in geometry that cannot be defined by using other figures: points, planes, and lines
594982788vertexthe common endpoint of an angle
594982789vertical anglestwo nonadjacent angles formed by two intersecting lines
594982790coordinatethe number that a point corresponds to
594982791L+L+W+W ( or for triangle a+b+c)the formula for perimeter
594982792L × Wthe formula for area ( square and rectangle)
594982793BH ÷ 2the formula for area (triangle)
5949827942(pi)rthe formula for circumference
594982795(pi) r²the formula for area ( circle)

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