Congruence of Triangles
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
(a) they have the same length
(c) m∠A = m∠B
Give any two real-life examples for congruent shapes.
- Two coins or notes of the same denomination.
- Two keys of the same lock.
If ∆ABC = FED under the correspondence ABC ↔ FED, write all the corresponding congruent parts of the triangles.
∆ABC = ∆FED means that ∆ABC superposes on ∆FED exactly such that the vertices of ∆ABC fall on the vertices of ∆FED in the following order A ↔ F, B ↔ E and C ↔ D.
If ∆DEF = BCA, write the part(s) of ∆BCA that correspond to