STD IX – GEOMETRY – ARCHIMEDES
About Course
In this section we will learn the following chapters.
1.TRIANGLES
2. ISOSCLES TRIANGLES
3. INEQUALITIES
4. MID-POINT THEOREM AND ITS CONVERSE
5. PYTHAGORAS THEOREM
6. RECTILINEAR FIGURES
7.RECTILINEAR FIGURES
8. RECTILINEAR FIGURES
9.CONSTRUCTION OF POLYGONS
10.AREA THEOREM
11.CIRCLE
Description
CONGRUENCY OF TRIANGLES
MIDPOINT THEOREM
Midpoint theorem states that, the line joining the midpoints of two sides of a triangle is parallel to the third side and half of the length of the third side
In △ PQR, S and T are the midpoints of side PQ and PR
∴ ST || QR
And, ST = 1/2 QR
Converse of midpoint theorem states that if a line is drawn through the midpoint of one side of a triangle, and parallel to the other side, it bisects the third side
In △ PQR, S is the midpoints of side PQ and PR, and ST || QR
∴ ST = 1/2 QR
and, T is the midpoint of side PR
Equal Intercept Theorem states that if equal intercepts are made on three or more parallel lines by a transversal, then the intercept made by any other line on these lines will also be equal.
PYTHAGORAS THEOREM
RECTILINEAR FIGURES
CIRCLES
About Course
In this section we will learn the following chapters.
1.TRIANGLES
2. ISOSCLES TRIANGLES
3. INEQUALITIES
4. MID-POINT THEOREM AND ITS CONVERSE
5. PYTHAGORAS THEOREM
6. RECTILINEAR FIGURES
7.RECTILINEAR FIGURES
8. RECTILINEAR FIGURES
9.CONSTRUCTION OF POLYGONS
10.AREA THEOREM
11.CIRCLE
Course Curriculum
TRIANGLE – CONGRUENCY OF TRIANGLE – FUNDAMENTAL CONCEPT
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31:39
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17:23
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17:23
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10:07
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12:43
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19:08
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20:08
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14:57
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24:36
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21:51
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08:35
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11:15
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06:41
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06:59
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10:10
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03:44
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16:54
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07:19
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11:30
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[PHYSICAL] [RHEA] CONGRUENCY OF TRIANGLES – SIMPLE NUMERICAL BASED ON CPTCTC – PART I
12:51 -
07:13
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13:16
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31:50
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QUIZ – EXERCISE A – TRIANGLES – CONGRUENCE OF TRIANGLES PRELIMINARY
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22:17
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21:17
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22:27
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09:03
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23:23
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23:23
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14:17
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21:29
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17:35
MID-POINT THEOREM – PROOF OF MID-POINT AND CONVERSE THEOREM
PHYTHAGORAS THEOREM – NUMERICAL BASED ON PYTHAGORAS THEOREMS
CONSTRUCTION OF POLYGONS – CONSTRUCT A PARALLELOGRAM AND RHOMBUS
RECTILINEAR FIGURES – NUMERICALS
RECTILINEAR FIGURES – APRIL 2024
CIRCLE – THEOREMS
AREA THEOREM – THEOREMS
ADDITINAL MATERIAL
ASSIGNMENT AND DUE DATES
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