3 years ago

Can someone please help me I really need help please help me thank you

Mathematics

2 answers:

yuradex [85]3 years ago

7 0

Answer:

x = a + b

Step-by-step explanation:

This is a proof

Exterior angle of a triangle = Sum of Interior and opposite angles

Exterior angle of a triangle = x

Sum of Interior and opposite angles = a + b

know that

a + b + c = 180 ______1 (total sum of angles in a triangle)

x + c = 180 _______2 (total sum of angles on a straight line)

from equation 1

c = 180 - (a + b)

from equation 2

c = 180 - x

hence

180 - (a + b) = 180 - x

180 - 180 + x = a + b

x = a + b

gogolik [260]3 years ago

6 0

X = a + b is always true

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