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Title: Reviewer for Mathematics, and Social Studies
Description: This is a reviewer fro Grade 9 students who use Philippine curriculum.
Description: This is a reviewer fro Grade 9 students who use Philippine curriculum.
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REVIEWER: PART III
Mathematics
B: Ens ujn
y
retQiao
LnsGterz
iu uire
Jgi atnz
ugeMrie
Materials needed:
Calculator
Similarity in Right Triangles
Parts of a Right Triangle
● Hypotenuse opposite segment of the right
triangle
● Shorter Leg
● Longer Leg
Δ ADC
Δ CDB
Δ ACB
3 Right Triangles similar
Parts:
● Segments of the Hypotenuse
● Leg Adjacent to DB
● Leg Adjacent to DA
Theorem 86: Right Triangle Similarity Theorem
ΔACD ~ ΔABC ~ ΔBDC
Theorem 87: Geometric MeanAltitude Theorem
segment 1
A
...
l
...
leg = √HY P OT ENUSE × SEGMENT adjacent to SHORT ER LEG
alt = √s1 • s2
Theorem 88: The Pythagorean Theorem
in a right triangle, the square of the hypotenuse is equal to the
sum of the squares of the legs
...
Theorem 89: The Converse of Pythagorean Theorem
RIGHT TRIANGLE
c2 = a2 + b2
Theorem 90
OBTUSE TRIANGLE
c2 > a2 + b2
Theorem 91
ACUTE TRIANGLE
c2 < a2 + b2
Theorem 92: The Median Theorem
the median to the hypotenuse of a right triangle is one half as long as
the hypotenuse
...
leg × 2
l
...
leg × √3
s
...
leg
2 or 3
√
Theorem 95: The 45°45°90° Triangle Theorem
leg =
hypotenuse
√2
hypotenuse = leg × √2
Trigonometry
The study of triangles and the relationship among their sides
...
The earliest trigonometric tables are made by the Babylonians
1900 and 1600 BCE
“trigonometry”
tria three
gonia angle
metron measure
Angle Definition
In Geometry
, the union of two noncollinear rays with a common endpoint, vertex
...
Two Rotations
clockwise → negative angle → subtract angles
counterclockwise → positive angle → add angles
Angles on a Coordinate Plane
Coordinate Plane “Cartesian Plane” has four quadrants
Angles in Standard Position
Two Sides
Terminal Side the rotating side
Initial Side the side which is on the right xaxis
The Unit Circle
● radius
is always one unit
...
Coterminal Angles
coterminal angles whose terminal side is the same
...
Example:
123
...
89°( 60′ )
1°
123° + 53
...
4′( 60′′ )
1′
123° + 53′ + 24′′
123°53′24′′
1°
1′
1°
90° + 42′( 60′ ) + 3′′( 60′′ )( 60′ )
1°
1′
1°
90° + 42′( 60′ ) + 3′′( 60′′ )( 60′ )
1°
90° + 0
...
05′( 60′ )
90° + 0
...
0008°
90
...
Sine
Sin
Cosecant
=
2
...
Tangent
Tan
Cotangent
=
hypotenuse
opposite
hypotenuse
adjacent
adjacent
opposite
Ratios of the Trigonometric Functions
SOH CAH TOA
Social Studies
B: Ens ujn
y
retQiao
LnsGterz
iu uire
Jgi atnz
ugeMrie
Ja lgn
hyIaa
InPrz
o ee
IaCba
y arl
I
...
III
...
Krusada
kilusang inilunsad ng simbahan katolikoupang muling mabawi ang banal na lupain mula sa
kamy ng mga muslim
○ Unang Krusada
■ Peter the Hermit
5000 katao
● magsasaka
■ Kanlurang Europa
Robe duke ng Normandy
Raymond duke ng Toulouse
Godfrey duke ng Lorraine
○ Ikalawang Krusada
■ Edessa hawak ng Turke
Haring Luise VII ng Pransiya
Conrad III emperador ng imperyo ng Roma
○ Ikatlong Krusada
“Krusada ng mga Hari”
■ Saladin Jerusalem
Haring Richard I ng Britanya
Haring Philip Agustus ng Pransya
Emperador Frederick Barbarossa
○ Ikaapat na Krusada
■ Papa Innocent III
■ zara
Piyudalismo at Manoryalismo
○ Piyudalismo
■ isang institusyong pangkabuhayan, pangpolitikal, at panlipunan na nababatay sa
pagmamayari ng lupa
...
■ Namamahala sa “serf” o aliping trabahador
○ Fief
■ Lupain
○ Katayuan ng Kababaihan sa Panahon ng Manoryalismo
■ Nagpapatakbo ng tahanan
■ Hindi nakakalabas ng bahay
■ Magtrabaho, manganak, magalaga
Merkantilismo
○ The Wealth of Nations
■ Sinulat ni Adam Smith
■ Malayang kalakalan
○ Bourgeoisie
■ Working people
○ threefield system
■ taniman sa tagsibol
■ Taniman sa taglagas
■ Lupang Tiwangwang
Paglakas ng Monarkiya
○ Henry II
■ Pagisahin ang buong Inglatera
V
...
VII
...
○ Divine Rights of Kings
■
Isang uri ng pamununo na naniniwalang ang kapangyarihan ng pinuno ay nag mula sa
diyos
...
IX
...
nagimbento ng
teleskopyo
May akda ng
“Dialogue Concerning the Two Chief World System” kung saan nilitis
ng inquisition at hinatulan ng pagkabilanggo habang buhay
○ air pump
■ nadiskubre ng aleman na physicist
■ nagbigay daan sa
steam engine
○ Geocentric
■ paniniwala na ang mundo ay nasa gitna ng kalawakan
...
○ PanSlavism
■ Lahat ng tao ay may iisang nasyonalidad
...
Title: Reviewer for Mathematics, and Social Studies
Description: This is a reviewer fro Grade 9 students who use Philippine curriculum.
Description: This is a reviewer fro Grade 9 students who use Philippine curriculum.