Congruence of Triangles — Chapter Test | Class 7 IMO

Q1

The symbol ≅ means ___ ?

≅ means 'is congruent to'.

Q2

Which criterion uses three equal sides?

Three equal sides is SSS.

Q3

RHS applies to which kind of triangles?

RHS applies to right-angled triangles.

Q4

Congruent figures have the same shape and ___ ?

Congruent figures have the same shape and size.

Q5

Three equal sides make two triangles congruent by ___ ?

Three sides — SSS.

Q6

Two sides and the included angle equal — which criterion?

Two sides and the included angle — SAS.

Q7

Two angles and the included side equal — which criterion?

Two angles and the included side — ASA.

Q8

If △ABC ≅ △DEF, then AB corresponds to ___ ?

A matches D and B matches E, so AB corresponds to DE.

Q9

In △ABC ≅ △PQR, angle B equals angle ___ ?

B matches Q, so angle B = angle Q.

Q10

Two line segments are congruent if they have the same ___ ?

Congruent segments have the same length.

Q11

Two identical printed photographs are ___ ?

Same shape and size means congruent.

Q12

Which of these is NOT a valid congruence criterion?

SSA is not a valid congruence criterion.

Q13

If △ABC ≅ △DEF and AB = 5 cm, then DE = ___ ?

Corresponding sides are equal, so DE = 5 cm.

Q14

Two right triangles with equal hypotenuse and one equal side are congruent by ___ ?

Right angle, hypotenuse and side — RHS.