Chris Giovanello, LBUSD Math Curriculum Office, 2004 Beat the Computer! Geometry Vocabulary for Unit...

Chris Giovanello, LBUSD Math Curriculum Office, 2004

Beat the Computer!

Geometry Vocabulary for Unit 3


Directions:•A slide will appear with a term

•Say the definition aloud before the computer can answer (5 sec.)

•You will hear a sound when the slide changes


transversalt

l

m1 2

7

45

8

36


transversal:

a line that intersects two coplanar lines at two distinct points

t

l

m1 2

7

45

8

36

Line t is the transversal for lines l and m.


alternate interior angles

t

l

m1 2

7

45

8

36


alternate interior angles:

nonadjacent interior angles that lie on opposite sides of

the transversal

t

l

m1 2

7

45

8

36

Alternate interior ’s:

3 & 5

4 & 6


same-side interior angles

t

l

m1 2

7

45

8

36


same-side interior angles:

interior angles that lie on the same side of the

transversalt

l

m1 2

7

45

8

36

Same-side interior ’s:

3 & 6

4 & 5


corresponding angles

t

l

m1 2

7

45

8

36


corresponding angles:

angles that lie on the same side of the transversal and

are in corresponding positions

t

l

m1 2

7

45

8

36

Corresponding ’s:

1 & 5

2 & 6

3 & 7

4 & 8


two-column proof


two-column proof:

a convincing argument that uses deductive

reasoning in which the statements and

reasons are aligned in columns


flow proof


flow proof:

a convincing argument that uses deductive reasoning in which arrows show the

logical connections between the statements


equiangular triangle


equiangular triangle:

a triangle that has three congruent angles


acute triangle


acute triangle:

a triangle that has three acute angles


right triangle


right triangle:

a triangle that has one right angle


obtuse triangle


obtuse triangle:

a triangle that has one obtuse angle


equilateral triangle


equilateral triangle:

a triangle that has three congruent

sides


isosceles triangle


isosceles triangle:

a triangle that has at least two sides

congruent


scalene triangle


scalene triangle:

a triangle that has no sides congruent


exterior angle of a polygon


exterior angle of a polygon:

an angle formed by a side and an extension

of an adjacent sideExterior angle


remote interior angles of a

triangle


remote interior angles of a triangle:

the two nonadjacent interior angles

corresponding to each exterior angleExterior

angle

Remote interior angles


polygon


polygon:

a closed plane figure with at least three sides

that are segments

Yes! No!No!


convex polygon


convex polygon:

a polygon that has no diagonal with points outside the polygon


concave polygon


concave polygon:

a polygon that has at least one diagonal with

points outside the polygon


quadrilateral


quadrilateral:

a polygon with four sides


pentagon


pentagon:

a polygon with five sides


hexagon


hexagon:

a polygon with six sides


heptagon


heptagon:

a polygon with seven sides


octagon


octagon:

a polygon with eight sides


nonagon


nonagon:

a polygon with nine sides


decagon


decagon:

a polygon with ten sides


dodecagon


dodecagon:

a polygon with twelve sides


equilateral polygon


equilateral polygon:

a polygon with all sides congruent


equiangular polygon


equiangular polygon:

a polygon with all angles congruent


regular polygon


regular polygon:

a polygon that is both equilateral and

equiangular


slope-intercept form


slope-intercept form:

a linear equation in the form of

y = mx + b


standard form


standard form:


Ax + By = C


point-slope form


point-slope form:


y - y1 = m(x - x1)

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Chris Giovanello, LBUSD Math Curriculum Office, 2004 Beat the Computer! Geometry Vocabulary for Unit...

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