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2 years ago

Help please im pretty sure this is called angle sum theory but I could be wrong

Mathematics

2 answers:

DENIUS [597]2 years ago

6 0

y = 25

Step-by-step explanation:

=> 115 = y + 90 {exterior angle of triangle is equal to the sum of its opposite two interior angles}

=> 115 = y + 90 

=> 115-90 =y

=> 115 = y + 90

=> 115-90 =y

=> y = 25

Alexxandr [17]2 years ago

6 0

Answer:

x= 180°-115°

= 65° ( adjacent angles in a straight line)

y= 180°-90°-65°

= 25° ( angle sum of a triangle)

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