Unit 1
a conclusion made using inductive reasoning
conjecture
point that divides segments into 2 congruent parts
midpoint
line where figures are reflected
line of reflection
shape with 3 sides
triangle
number of triangles in a 4 sided shape
2
an example that shows a conjecture is false
counterexample
point, line, or ray that intersects a segment at its midpoint
segment bisector
reflect figure over x-axis
see picture
name 3 types of triangles
acute, obtuse, right, scalene, isosceles, equilateral
polygon sum theorem
the sum of a polygon is (n-2)(180) where n is the number of sides in a polygon
1. If a figure is a hexagon, then it has six sides.
write converse of this statement
converse: if a figure has six sides, then it is a hexagon,
point C is on line segment AB. line segment AB has a length of 20 cm. if CB has a length of 12 cm, what is the length of AB?
8 cm
quadrilateral GOLF has coordinates G(-4, -5), O(-2,-2), L(3,2), F(6,-3). After a translation, F'=(-4,-9). Find G', O', and L'
G'=(-14, -11) O'=(-12,-8), L(-7, -4)
Find value of X
79
polygon BLICK is a pentagon. find the sum of the measures of the interior and exterior angles.
interior=540
exterior=360
find the pattern
3, 15, 27, 39, 51
add 12
Name a line segment, ray, and 2 objects that are intersecting
line segment=AB
ray=BE
intersecting=AC and DF
identify the translation in the figure
180 CCW
yes
count the right angles
4
4, 8, 6, 1, 10,.....
what is the 10th number
7
angles A and H are....
alternate exterior angles
y=|x+3|-2
state if the triangles are congruent
yes
in rhombus YART, YR=8 and TS=3. find AR
AR=5