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MC Ch13 Vocab

Gr5 Math Vocab

acute angle an angle with a measure between 0º and 90º
angle two RAYS with a common endpoint
CONGRUENT line segments line segments that have EXACTLY the same LENGTH
degree a unit for measuring angles
EQUILATERAL triangle a triangle with three CONGRUENT sides and angles
image the result after a geometric figure has been TRANSFORMED
INTERSECTING lines LINES that meet or CROSS at a common POINT
ISOSCELES triangle a triangle with at least 2 sides the SAME length and 2 EQUAL angles
obtuse angle an angle that measures between 90º and 180º
PARALLEL lines lines that are the same distance apart; DO NOT INTERSECT
parallelogram a QUADRILATERAL with four sides in which each pair of OPPOSITE sides are PARALLEL and CONGRUENT
PERPENDICULAR lines LINES that cross each other at RIGHT ANGLES
quadrilateral a POLYGON that has 4 sides and 4 angles
rectangle a QUADRILATERAL with four RIGHT angles; OPPOSITE sides are EQUAL and PARALLEL
REFLECTION a figure that is FLIPPED over a line to create a MIRROR image of that figure
rhombus a PARALLELOGRAM with four CONGRUENT sides
right angle an angle with a measure of 90º
ROTATION TURNING a figure about a fixed point
square a rectangle with four CONGRUENT SIDES
TRANSFORMATION a movement of a figure that does NOT CHANGE the SIZE or SHAPE of that figure
TRANSLATION SLIDING a figure in a STRAIGHT LINE horizontally, vertically, or diagonally
trapezoid a QUADRILATERAL with EXACTLY one pair of PARALLEL sides
Created by: bcarvajal