Class 9 Exam  >  Class 9 Notes  >  Lab Manuals for Class 9  >  Vice Voca: Verify the Different Criteria for Congruency of Triangles

Vice Voca: Verify the Different Criteria for Congruency of Triangles | Lab Manuals for Class 9 PDF Download

Q.1. What is the measure of each angle in an equilateral triangle?

In equilateral triangle each angle measures 60°.


Q.2. Are the sides opposite to equal angles of a triangle unequal?

No, side opposite to equal angles in a triangle are always equal.


Q.3. What is the full form of CPCT?

The full form of CPCT is Corresponding Parts of Congruent Triangles.


Q.4. If two triangles are congruent. Does they have different perimeters?

No, both have equal perimeters.


Q.5. If ΔABC ≅ ΔDEF and ∠A = ∠D, ∠C = ∠F, then what is the third necessary condition to prove them congruent?

AC = DF


Q.6. What do you understand by congruent figures?

Two figures are congruent, if they are of the same shape and same size.


Q.7. Is there any AAA congruency criterion for triangles?

No


Q.8. Are congruent triangles similar?

Yes


Q.9. What do you mean by the RHS congruence rule for triangles?

According to the RHS congruence rule, in two right triangles, the hypotenuse and one side of one triangle are equal to the hypotenuse and one side of the other triangle, then the two right . triangles are congruent.


Q.10. If ΔABC ≅ ΔDEF and AB = DE, BC = EF, then what is the third necessary condition to prove them congruent?

∠B = ∠E

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