Jharne De and Ranjana Kumar Solutions for Chapter: Congruence, Exercise 1: Mental Maths

If two angles are congruent, it means that they are _____. (acute angles/equal angles/right angles)

Two squares are always congruent.

If $\mathrm{\Delta }PQR\cong \mathrm{\Delta }XYZ$ and $\angle Z=42°,$ then which angle of $\mathrm{\Delta }PQR$ measures $42°$?

In $\mathrm{\Delta }XYZ$, the side included between $\angle X$ and $\angle Z$ is _____. [$YZ/YX/XZ$]

All congruent triangles are equal in area, but triangles having equal area may not be congruent.

If two line segments have _____ length, then they are congruent. (equal/unequal)

Are all equilateral triangles congruent to each other?

If two squares are congruent to each other, then their areas are _____. [not equal/equal]