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FISK Math CH 9 Vocab

Fisk Math Chapter 9 Vocabulary

QuestionAnswer
acute angle an angle with a measure greater than 0º and less than 90º
acute triangle a triangle having three acute angles
angle two rays with a common endpoint (vertex)
complementary angles two angles having the sum of their measures equaling 90º
congruent angles angles with the same measure
congruent figures figures that are the same size and shape
congruent segments line segments that have the same length
corresponding sides the parts of the congruent or similar figures that match
degree the most common unit of measure for angles
equilateral triangle a triangle having all three sides congruent and all three angles congruent
isosceles triangle a triangle in which at least two sides are congruent
line segment a straight path between two endpoints
obtuse angle an angle that measures greater than 90º but less than 180º
obtuse triangle a triangle having one obtuse angle
parallelogram a quadrilateral that has both pairs of opposite sides congruent and parallel
quadrilateral a polygon with four sides
rectangle a quadrilateral with opposite sides congruent and parallel and all angles are right angles
rhombus a parallelogram with all sides congruent
right angle an angle that measures 90º
right triangle a triangle having one right angle
scalene triangle a triangle in which no sides are congruent
side a ray that is part of an angle
similar figures figures that have the same shape but different sides.
square a parallelogram with all sides congruent, all angles right angles, and opposite sides parallel
straight angle an angle that measures exactly 180º
supplementary angles two angles whose sum of their measure is 180º
tessellation a pattern formed by repeating figures that fit together without gaps or overlaps
trapezoid a quadrilateral with one pair of opposite sides parallel
vertex the common endpoint of the two rays that form an angle
vertical angles nonadjacent angles formed by a pair of lines that intersect
adjacent angles two angles that share a common vertex and one ray
Created by: fiskc
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