for Sem 1 Quiz 5 If the doorbell rings then the dog will bark What conclusion can you draw The doorbell rings The dog barks 2x 390 x 220 The sum of twice an angle and 3 times its complement is 220 Find the measure of the angles supplement ID: 270352
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Slide1
Review #2 for Sem 1 Quiz 5Slide2
If the doorbell rings, then the dog will bark.What conclusion can you draw?
The doorbell rings.
The dog barks.Slide3
2x + 3(90 – x) = 220The sum of twice an angle and 3 times its complement is 220. Find the measure of the angle’s supplement.
2x + 270 – 3x = 220
-x = -50
x = 50
Supplement = 130° Slide4
If 2 angles are congruent, then they have the same measureWrite a biconditional
for the statement below.
Two angles are congruent
iff
they have the same measure.Slide5
Opposite angles congruent?Which quadrilaterals have:
Parallelogram, rectangle, RhombusSlide6
Is ADCB a valid name for the parallelogram?
Yes!
A
D
C
BSlide7
~h um ~u
c ~h
~m z
Make a logic chain, and draw a conclusion.
C
~h u ~m z
OR
~z m ~u h ~c
C
Z
or
~z ~cSlide8
What conclusion can you draw?
The dog is barking.
No conclusion!
If the doorbell rings, then the dog will bark.Slide9
Is DABC a valid name for the parallelogram?
Yes!
A
D
C
BSlide10
~m qm ~w
q l
Make a logic chain, and draw a conclusion.
W
~m q l
OR
~l ~q m ~w
W
l
or
~l
~wSlide11
What conclusion can you draw?
The doorbell has not rung.
No conclusion!
If the doorbell rings, then the dog will bark.Slide12
Is BDCA a valid name for the parallelogram?
No!
A
D
C
BSlide13
Congruent diagonals?Which quadrilaterals have:
Rectangle
&
Isos
TrapezoidSlide14
If a polygon has 3 sides, then it is a triangle.Write a biconditional
for the statement below.
A polygon
has 3 sides
iff
it is a triangle.Slide15
A g~h d
p ~d
h ~g
Make a logic chain, and draw a conclusion.
A
g ~h d ~p
OR
P ~d h ~g ~a
A
~P
or
p aSlide16
If 2 lines in a plane do not intersect, then they are parallel.Write a
biconditional
for the statement below.
2 lines in a plane do not intersect
iff
they are parallel.Slide17
Is BADC a valid name for the parallelogram?
Yes!
A
D
C
BSlide18
What conclusion can you draw?
The dog is quiet.
The doorbell has not rung.
If the doorbell rings, then the dog will bark.Slide19
Perpendicular Sides?Which quadrilaterals have:
rectangleSlide20
Is BCAD a valid name for the parallelogram?
No!
A
D
C
BSlide21
4 congruent Sides?Which quadrilaterals have:
rhombusSlide22
Is ACDB a valid name for the parallelogram?
No!
A
D
C
BSlide23
90 – x + 180 – x = 210The sum of an angle’s complement and its supplement is 210. find the measure of the angle’s supplement.
270 – 2x = 210
-2x = -60
x = 30
Supplement = 150° Slide24
180 – x – 3x = 100Three times and angle, subtracted from the angle’s supplement is 100. Find the measure of the angle’s complement.
-4x = -80
X = 20
complement = 160° Slide25
Perpendicular diagonals?Which quadrilaterals have:
RhombusSlide26
Diagonals that bisect each other?Which quadrilaterals have:
Parallelogram, rectangle, rhombusSlide27
What conclusion can you draw?
If the dog barks, the cat will hide.
If the doorbell rings, then the cat will hide.
If the doorbell rings, then the dog will bark.Slide28
Is ABCD a valid name for the parallelogram?
Yes!
A
D
C
BSlide29
If today is Friday, then tomorrow is Saturday.Write a biconditional
for the statement below.
Today is Friday
iff
tomorrow is Saturday.Slide30
Is CBAD a valid name for the parallelogram?
Yes!
A
D
C
B