## MP Board Class 7th Maths Solutions Chapter 7 Congruence of Triangles Ex 7.1

Question 1.

Complete the following statements:

(a) Two line segments are congruent if ___ .

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

(c) When we write ∠A = ∠B, we actually mean ___.

Solution:

(a) They have the same length.

(b) 70°

(c) m∠A = m∠B

Question 2.

Give any two real-life examples for congruent shapes.

Solution:

(i) Sheets of same letter pad.

(ii) Biscuits in the same packet.

Question 3.

If ∆ABC ≅ ∆FED under the correspondence ABC ⟷ FED, write all the corresponding congruent parts of the triangles.

Solution:

If ∆ABC ≅ ∆FED, then the corresponding angles and sides will be equal to each other.

Question 4.

If ∆DEF ⟷ ∆BCA, write the part(s) of ∆BCA that correspond to

(i) ∠E

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

(iii) ∠F

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

Solution:

(i) ∠C

(ii) \(\overline{C A}\)

(iii) ∠A

(iv) \(\overline{B A}\)