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Chapter 7 - Angles and Scale Drawings > Angles, Triangles, Quadrilaterals, Scale > Flashcards

Angles, Triangles, Quadrilaterals, Scale Flashcards

1
Q

complementary angles

A

Two angles that sum to 90 degrees.

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2
Q

supplementary angles

A

Two angles that sum to 180 degrees.

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3
Q

vertical angles

A

two angles formed by the intersection of two lines. They are always congruent.

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4
Q

adjacent angles

A

Two angles next to each other; they share both a side and a vertex.

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5
Q

acute angle

A

an angle less than 90 degrees

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6
Q

right angle

A

an angle of exactly 90 degrees

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7
Q

obtuse angle

A

An angle greater than 90 degrees (but less than 180 degrees)

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8
Q

straight angle

A

An angle equal to 180 degrees.

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9
Q

Congruent

A

Has the same measure.

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10
Q

acute triangle

A

A triangle with all acute angles

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11
Q

obtuse triangle

A

A triangle with 1 obtuse angle

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12
Q

right triangle

A

a triangle with 1 right angle

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13
Q

equiangular triangle

A

a triangle with 3 congruent angles

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14
Q

scalene triangle

A

a triangle with no congruent sides

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15
Q

isosceles triangle

A

a triangle with two congruent sides

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16
Q

equilateral triangle

A

a triangle with 3 congruent sides

17
Q

quadrilateral

A

a polygon with four sides

18
Q

trapezoid

A

a quadrilateral with exactly one pair of parallel sides

19
Q

kite

A

a quadrilateral with two pairs of congruent adjacent sides and opposite sides that are not congruent.

20
Q

parallelogram

A

a quadrilateral with opposite sides that are parallel and congruent

21
Q

rectangle

A

A parallelogram with four right angles

22
Q

rhombus

A

a parallelogram with four congruent sides

23
Q

square

A

a parallelogram with four congruent sides and four right angles.

24
Q

scale

A

A ratio that compares the measurements of a drawing or model with the actual measurements. It includes units.

25
Q

scale factor

A

A scale without units. (All units are the same).

26
Q

scale drawing

A

a proportional, two-dimensional drawing of an object.

27
Q

scale model

A

A proportional, three-dimensional drawing of an object.

Chapter 7 - Angles and Scale Drawings (1 decks)

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