Chapter 7.1
What is a quadrilateral?
4 - sided figure
What is a parallelogram?
A quadrilateral with both pairs of opposite sides parallel
What is a rectangle?
A parallelogram with four right angles
What is a rhombus?
A parallelogram with all four sides congruent
What is a trapezoid?
A quadrilateral with only one pair of parallel sides
What is a polygon?
Figure with 3 or more sides
What does supplementary mean?
Adds up to 180°
How many degrees is one of the angles of a rectangle?
90°
If AB is 18, Find DC
DC = 18
What are the parallel sides of a trapezoid called?
bases
What formula tells you the sum of interior angles of a polygon?
(n - 2) * 180
DC = 4 ft
Daily Double!
Free Points!
What is a square?
A parallelogram with all four sides and all four angles congruent
What is an isosceles trapezoid?
A trapezoid with congruent legs
Solve for X
(int)
x = 163°
Find <B
<B = 45°
For all rectangles, opposite sides are ___________ and ____________.
parallel ; congruent
If AE is 15 find DB
DB = 30
What is a kite?
A quadrilateral with exactly 2 congruent consecutive sides
solve for Y
(ext)
y = 125
If a quadrilateral is a parallelogram, it's opposite sides are what?
congruent
For all rectangles, diagonals ____________ each other and are ___________.
bisect ; congruent
If a quadrilateral is both a __________ and a _________, it is a square.
rectangle ; rhombus
If ABCD is a kite, find <D
<D = 127°