Question

Prove <4 and <1 are supplementary.

Answer 1

Answer:

the = 180

Step-by-step explanation:

Answer 2

Answer:

proof:

Triangle is isosceles, so angle 4 and 5 are equal

Angle 5 + Angle 1 = 180°

Angle 4+ Angle 1 = 180°

Step-by-step explanation:

<4 ≅ <5. <5 + <1 = 180° <4 + <1 are supplementary

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-Chetan K