Question

Help please! I'm just uncertain about what d is.

Answer 1

By the definition of supplementary angles,
a. angle 1 + angle 2 = 180 degrees
b. and angle 2 + angle 3 = 180 degrees
c. Then angle one + angle 2 = angle 2 + angle 3 = 180 degrees
d. Subtract angle 2 from each side. You get angle 1 = angle 3
e. or angle 1 ≅ angle 3

I hope that the above answer is absolutely clear to you.

Answer 2

Answer:

Part a) $180\°$

Part b) $180\°$

Part c) $180\°$

Part d) Angle $3$

Part e) Angle $3$

Step-by-step explanation:

we know that

If two angles are supplementary

then

their sum is equal to $180\°$

In this problem

angle 1 and angle 2 are supplementary, and angle 2 and angle 3 are supplementary

so

$m$ --------> equation A

$m$ --------> equation B

equate equation A and equation B

$m$

Subtract $m$ both sides

$m$

$m$  

therefore

m<1≅m<3