Question

What is the measure of outer angle at B ?
Measure of outer angle at B
What is the measure of outer angle at C ?
Measure of outer angle at C
What is the measure of outer angle at D?
Measure of outer angle at D​

Answer 1

Answer:

see the above pic hope it will help you

Answer 2

Solution:-

1) The outer angle of B is < CBP

We know that <CBA + < CBP = 180°( linear angle)

So, 90° + <CBP = 180°

<CBP = 180° - 90°

<CBP = 90°

The exterior angle of B is 90°

2) The outer angle of C is < DCQ

<DCB + <DCQ = 180°

70° + <DCQ = 180°

<DCQ = 180° - 70°

<DCQ = 110°

3) The outer angle of D

<CDA + <ADR = 180°

90° + <ADR = 180°

<ADR = 180° - 90°

<ADR = 90°

The outer angle of B is 90°

The outer angle of C is 110°

The outer angle of D is 90°