John and Tom invited 27 friends to make popcorn and watch an outdoor movie. Tom invited twice as many friends as John. How many
1 answer:
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Answer: The measure of the vertex angle = 80°
Step-by-step explanation:
Angle sum property of triangle : The sum of the measures of the angles for any triangle is 180 degrees.
So,
'
Then, vertex angle =
Hence, The measure of the vertex angle = 80°