# Interactive video lesson plan for: CBSE class 10 maths NCERT Solutions chapter 6 Triangles Ex 6.3 | Math tutorials Similar Triangles

#### Activity overview:

CBSE class 10 maths NCERT Solutions chapter 6 Triangles Exercise 6.3 | Math tutorials Similar Triangles

http://www.learncbse.in/ncert-solutions-class-10th-maths-chapter-6-triangles-exercise-6-1-question-1/
http://www.learncbse.in/rd-sharma-class-10-solutions/
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00:03 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q1. State which pairs of triangles in Fig. 6.34 are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form :
00:47 Tests for Similar Triangles AA similarity criterion
01:18 (ii) | 02:58 (iii) | 03:59 (iv) | 04:54 (v) | 06:10 (vi) |
02:17 Solving similar triangles SSS (Side–Side–Side) similarity criterion
05:43 SAS (Side–Angle–Side) similarity criterion for two triangles
06:36 Angle sum prpperty of triangle.
07:22 Solving similar triangles AA similarity criterion
07:47 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q3. Diagonals AC and BD of a trapezium ABCD with AB || DC intersect each other at the point O. Using a similarity criterion for two triangles, show that OA/OC = OB/OD.
08:16 constructions procedure to solve geometry problems
09:20 Vertically opposite angles are equal
09:33 Alrenate interior angles
10:18 AAA similarity criterion
11:05 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q4. In Fig. 6.36, QR/QS = QT/PR and angle 1 = angle 2. Show that triangle PQS ~ triangle TQR.
12:01 It tow angles are equal then their sides opposite to equal angles are equal.
13:55 SAS (Side–Angle–Side) similarity criterion for two triangles
14:14 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q5. S and T are points on sides PR and QR of triangle PQR such that angle P = angle RTS. Show that triangle RPQ ~ triangle RTS.
16:08 AAA similarity criterion
16:38 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q6. In Fig. 6.37, if triangle ABE ~ triangle ACD, show that triangle ADE ~ triangle ABC.
18:33 SAS (Side–Angle–Side) similarity criterion
19:30 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q7. In Fig. 6.38, altitudes AD and CE of triangle ABC intersect each other at the point P. Show that:
20:33 (i) triangle AEP ~ triangle CDP
21:13 Vertically opposite angles are equal
22:08 (ii) triangle ABD ~ triangle CBE
22:52 use AAA similarity criterion
23:37 (iii) triangle AEP ~ triangle ADB
25:03 AAA similarity criterion
25:35 (iv) triangle PDC ~ triangle BEC
26:18 AA similarity criterion
26:38 Q8. E is a point on the side AD produced of a parallelogram ABCD and BE intersects CD at F. Show that triangle ABE ~ triangle CFB.
28:52 Apply AA similarity criterion.
29:41 Q9. In Fig. 6.39, ABC and AMP are two right triangles, right angled at B and M respectively. Prove that:
30:08 (i) triangle ABC ~ triangle AMP 31:22 (ii) CA/PA = BC/MP.
31:49 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q10. CD and GH are respectively the bisectors of triangle ACB and triangle EGF such that D and H lie on sides AB and FE of angle ABC and angle EFG respectively. If triangle ABC ~ triangle FEG, show that:
34:04 (i) CD/GH = AC/FG 36:36 (ii) triangle DCB ~ triangle HGE 38:20 (iii) triangle DCA ~ triangle HGF
33:19 Angular bisector
35:28 Use AA similarity criterion
39:16 CBSE class 10 maths NCERT Solutions chapter 6 Triangles Q11. In Fig. 6.40, E is a point on side CB produced of an isosceles triangle ABC with AB = AC. If AD perpendicular to BC and EF perpendicular to AC, prove that triangle ABD ~ triangle ECF.

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CBSE solutions for class 10 maths Chapter 6 Triangles Exercise 6.3
CBSE class 10 maths NCERT Solutions chapter 6 Triangles

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Triangles class 10
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3 ways to prove triangles are similar
Similar triangles examples
Geometry similar triangles
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simple math problems

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