Question

Find the unknown quantities in the following pairs of congruent triangles.
10
45
(1)
70"
40​

Answer 1

Answer:

hi

Explanation:

7 Mathexcellup logo

Congruence of Triangles

In Text Questions

Example 1: In given figures, lengths of the sides of the triangles are indicated. By applying SSS congruent rule, state which pairs of triangle are congruent. In case of congruent triangles, write the results in symbolic form:

congruent triangles congruent triangles congruent triangles congruent triangles

Answer: (i) ΔABC ≈ ΔPQR

(ii) ΔDEF ≈ ΔNML

(iii) Not congruent

(iv) ΔADB ≈ ΔADC

Example 2: In the given figure, AB = AC and D is the mid-point of BC

congruent triangles

State the three pairs of equal parts in ΔADB and ΔADC.

Answer: AD = AD, DB = DC and AB = AC

Is ΔADB ≈ΔADC? Give reasons.

Answer: By SSS criterion, triangles are congruent.

Is angle B = angle C? Why?

Answer: Since, triangle are congruent, AC = AB and DC = DB hence, angle B = angle C

pls mark my answer has brilliant