# NCERT Solutions for Class 7 Maths Exercise 7.1 ## myCBSEguide App

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NCERT solutions for Maths Congruence of Triangles ## NCERT Solutions for Class 7 Maths Congruence of Triangles

###### Question 1.Complete the following statements:
1. Two line segments are congruent if _______________.
2. Among two congruent angles, one has a measure of {tex}70^\circ ,{/tex} the measure of other angle is _______________.
3. When we write {tex}\angle {/tex}A = {tex}\angle {/tex}B, we actually mean _______________.

(a) they have the same length

(b) {tex}70^\circ {/tex}

(c) {tex}m\angle {/tex}A = {tex}m\angle {/tex}B

###### Question 2.Give any two real time examples for congruent shapes.

(i) Two footballs

(ii) Two teacher’s tables

NCERT Solutions for Class 7 Maths Exercise 7.1

###### Question 3.If {tex}\Delta {/tex}ABC {tex} \cong \Delta {/tex}FED under the correspondence ABC {tex} \leftrightarrow {/tex} FED, write all the corresponding congruent parts of the triangles.

Given: {tex}\Delta {/tex}ABC {tex} \cong {/tex}{tex}\Delta {/tex}FED. The corresponding congruent parts of the triangles are:

(i) {tex}\angle {/tex}A {tex} \leftrightarrow {/tex}{tex}\angle {/tex}F

(ii) {tex}\angle {/tex}B {tex} \leftrightarrow {/tex}{tex}\angle {/tex}E

(iii) {tex}\angle {/tex}C {tex} \leftrightarrow {/tex}{tex}\angle {/tex}D

(iv) {tex}\overline {{\text{AB}}} {/tex}{tex} \leftrightarrow {/tex}{tex}\overline {{\text{FE}}} {/tex}

(v) {tex}\overline {{\text{BC}}} {/tex}{tex} \leftrightarrow {/tex}{tex}\overline {{\text{ED}}} {/tex}

(vi) {tex}\overline {{\text{AC}}} {/tex}{tex} \leftrightarrow {/tex}{tex}\overline {{\text{FD}}} {/tex}

NCERT Solutions for Class 7 Maths Exercise 7.1

###### Question 4.If {tex}\Delta {/tex}DEF {tex} \cong \Delta {/tex}BCA, write the part(s) of {tex}\Delta {/tex}BCA that correspond to:

i.{tex}\angle {/tex}E

ii.{tex}\overline {{\text{EF}}} {/tex}

iii.{tex}\angle {/tex}F

iv.{tex}\overline {{\text{DF}}} {/tex}

Given: {tex}\Delta {/tex}DEF {tex} \cong {/tex}{tex}\Delta {/tex}BCA. (i) {tex}\angle {/tex}E {tex} \leftrightarrow {/tex}{tex}\angle {/tex}C

(ii) {tex}\overline {{\text{EF}}} {/tex}{tex} \leftrightarrow {/tex}{tex}\overline {{\text{CA}}} {/tex}

(iii) {tex}\angle {/tex}F {tex} \leftrightarrow {/tex}{tex}\angle {/tex}A

(iv) {tex}\overline {{\text{DF}}} {/tex}{tex} \leftrightarrow {/tex}{tex}\overline {{\text{BA}}} {/tex}

## NCERT Solutions for Class 7 Maths Exercise 7.1

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