1. Mathematics class 7th RD Sharma
4. Rational Numbers
5. Operations on Rational Numbers
7. Algebraic Expressions
8. Linear Equations In One Variable
9. Ratio and Proportion
10. Unitary Method
12. Profit and Loss
13. Simple Interest
14. Lines and Angles
15. Properties of Triangle
19. Visualising Solid Shapes
20. Mensuration 1
21. Mensuration 2 Area of Circle
22. Data Handling-Collection Organisation Data
23. Data Handling-Central Values
24. Data Handling-Construction Of Bar Graphs
25. Data Handling-Probability
1. Congruence Exercise 16.1
2. Congruence Exercise 16.2
3. Congruence Exercise 16.3
4. Congruence Exercise 16.4
5. Congruence Exercise 16.5
In each of the following pairs of right triangles, the measures of some part are indicated alongside. State by the application of RHS congruence conditions which are congruent, and also state each result in symbolic form.
Δ ABC is isosceles with AB = AC. AD is the altitude from A on BC.
(i) Is ΔABD ≅ ΔACD?
(ii) State the pairs of matching parts you have used to answer (i).
(iii) Is it true to say that BD = DC?
ΔABC is isosceles with AB = AC. Also. AD ⊥ BC meeting BC in D. Are the two triangles ABD and ACD congruent? State in symbolic form. Which congruence condition do you use? Which side of ADC equals BD? Which angle of Δ ADC equals ∠B?
Draw a right triangle ABC. Use RHS condition to construct another triangle congruent to it.
In fig. 47, BD and CE are altitudes of Δ ABC and BD = CE.
(i) Is ΔBCD ≅ ΔCBE?
(ii) State the three pairs or matching parts you have used to answer (i)
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Mathematics class 7th RD Sharma
Operations on Rational Numbers
Linear Equations In One Variable
Ratio and Proportion
Profit and Loss
Lines and Angles
Properties of Triangle
Visualising Solid Shapes
Mensuration 2 Area of Circle
Data Handling-Collection Organisation Data
Data Handling-Central Values
Data Handling-Construction Of Bar Graphs
Congruence Exercise 16.1
Congruence Exercise 16.2
Congruence Exercise 16.3
Congruence Exercise 16.4
Congruence Exercise 16.5
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