Question

Two of the angles of a triangle are equal and the third angle is 100° . Find the measure of unknown angle.​

Answer 1

Answer:

40 degree is a measure of each angle

bcoz triangle =180degree

180=100+40+40

Answer 2

$\textrm{Since two angles of a triangles are equal, Consider them as 'x'}$

$\longrightarrow\rm{x+x+100^\circ=180^\circ\quad...\:Angle \:Sum\: Property}$

$\longrightarrow\rm{2x+100^\circ=180^\circ}\longrightarrow\rm{2x=180^\circ-100^\circ=80^\circ}$

$\longrightarrow\rm{x=80^\circ/2}\longrightarrow\rm{x=40^\circ}$

$\boxed{\bigstar\textrm{ Now, Measure of Each of these two angles is 40 ^\circ and 40 ^\circ respectively}}$