Question

triangle ABC and DEF are right angles at B and E respectively and triangle ABC, DEF, C=30° then D=​

Answer 1

Answer:

D=60

Step-by-step explanation:

in triangle ABC and DEF are right angled triangle.

using angle sum property in triangle ABC

A + B + C = 180

A + 90 + 30 = 180

A + 120 = 180

A = 180 - 120

A = 60

so angled D is 60 .

Answer 2

Answer:

D =60°

Step-by-step explanation:

in triangle ABC and DEF

right angle at B and E (90°)

as they are congruent then there all Angles and sides are equal so ,

∆ABC ~∆DEF

Angle C =Angle F

Angle A =Angle D

Angle B= Angle E

by this we conclude that Angle F =30°

as we know,

D+E+F=180°

D+90°+30°=180°

D=180°-120°

D=60°

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