Question

16) Find angle1, angle2, angle3, angle4, angle5, given that angle 3 =angle 4​

Answer 1

Step-by-step explanation:

In triangle ABC

<1= 30° +60° (External angle property)

=90°

Again

<1 +<3+<4 =180° ( angle sum property of a triangle)

= > 90° +<3 +<4 =180°

=> < 3+ <4 = 180° - 90°

=> 2 <3 = 90° ( <3=<4 , given)

=> <3 = 90° /2

So <3 = 45°

So <4 =45°

And

30° +60° <5 =180° ( angle sum property of a triangle )

=> <5= 180 -90° So <5 =90°