interior angles
what is the formula to find the sum of interior angles of a polygon?
(n-2)180
What is the sum of exterior angles of ANY polygon?
360 degrees
What are the five properties of a parallelogram?
opposite sides are parallel
opposite sides are congruent
opposite angles are congruent
one pair of sides are parallel and congruent.
diagonals bisect eachother
what type of quadrilateral do the 4 coordinates below create?
A (-5,-2) B(3,-2) C(1,-6) D(-7,-6)
parallelogram
How old is Mr. Gernertt?
36
what is the sum of interior angles of a 13 sided polygon?
1980 degrees
what is the sum of exterior angles of a 9 sided polygon?
360 degrees
what are all the properties of a rectangle?
all angles are 90 degrees
diagonals are congruent
all parallelogram properties
An angle or segment that is equal to itself.
consecutive angles of a parallelogram are:
3x+1 and 2x-6, solve for x
37 degrees
what is the angles measure of each interior angle of a regular octagon (8 sides)
135 degrees
what is the measure of each exterior angles of a regular 12 sided polygon?
30 degrees
what are the properties of a rhombus
all sides are congruent
diagonals are perpendicular
diagonals bisect angles
all parallelogram properties
What is the Isosceles Trapezoid Base Angle Theorem?
Base Angles are Congruent
I have 4 congruent sides, what type of quadrilateral(s) am I?
Rhombus, Square
the angles measures of a 7 sided shape are:
145 degrees, 130 degrees, 2x, 75 degrees, x, 170 degrees, 95 degrees
Solve for x
x = 95 degrees
the measures of exterior angles of a 5 sided shape are:
120 degrees, 0.5 x, 85 degrees, 95 degrees, 2.5 x
Solve for x
20 degrees
is a rhombus always, sometimes or never a square?
sometimes
What are the 4 ways to prove triangles are congruent?
SSS
SAS
ASA
AAS
My diagonals are congruent, what type of quadrilateral(s) am I?
*Hint* there are three answers
Rectangle, Square, and isosceles trapezoid.
What is the measure of each interior angles of a regular 15 sided polygon?
156 degrees
What is the measure of each exterior angle of a regular 20 sided polygon?
18 degrees
what is the formula to find the mid-segment of a trapezoid?
mid-segment = (base 1 + base 2)/2
Do the points (2,4), (8,4), (8,-3) and (2,-3) create a parallelogram?
yes!
My opposite sides are parallel and my diagonals bisect each other, what type of quadrilateral am I?
parallelogram