Haryana State Board HBSE 7th Class Maths Solutions Chapter 7 Congruence of Triangles Ex 7.1 Textbook Exercise Questions and Answers.

## Haryana Board 7th Class Maths Solutions Chapter 7 Congruence of Triangles Exercise 7.1

Question 1.

Complete the following statements:

(a) Two line segments are congruent if

(b) Among two congruent angles one has a measure 70°; the measure of the other angle is .

(c) When we write ∠A ≅ ∠B we actually mean

Solution:

(a) their length are same.

(b) 70° (c) ∠A ≅ ∠B.

Question 2.

Give any two real-life examples for congruent shapes.

Solution:

(i) Ears

(ii) Eyes

Question 3.

If ∠ABC = ∠FED under the correspondence ABC ⇔ FED, write all the corresponding congruent parts of the triangles.

Solution:

If ΔABC ≅ ΔFED

then AB = FE

BC = ED

AC = FD

and ∠A = ∠F,

∠B =∠E and ∠C = ∠D.

Question 4.

If ΔDEF ≅ ΔBCA, write the part (s) of ABCA that correspond to

(i) ∠E

(ii) \(\overline{E F}\)

(iii) ∠F

(iv) \(\overline{D F}\)

(i) ∠E ⇔ ∠F

(ii) \(\overline{E F}\) ⇔ \(\overline{C A}\)

(iii) ∠F ⇔∠A

(iv) \(\overline{D F}\) ⇔ \(\overline{B A}\)