Question

The measure of angles of triangles are x , (x+ 10)° and (x+20)° respectively. Find the measure of each angle.​

Answer 1

So, the angles are 70°,80°,90° .

x+(x+10°)+(x+20°) = 180° [Angle sum property]

x+x+10°+x+20°=180°

3x+10+20=180°

3x+30=180°

3x=180°-30°

3x=210°

x=210°/3

x=70°

Hence,angle 1 =70°

angle 2 =x+10°

=70°+10°

=80°

angle 3 =x+20°

=70°+20°

=90°