Answer:
103°
Step-by-step explanation:
Let's take the 3rd angle as θ:
Since all the angles in a triangle add up to 180°,
57 + 20 + θ = 180
77 + θ = 180
θ = 180 - 77
= 103°
Hence, the third angle is 103°
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Answer:
900° and 1260°
Step-by-step explanation:
The sum of the interior angles of a polygon is calculated as
sum = 180° (n - 2) ← n is the number of sides
(2)
Here n = 7 , then
sum = 180° × 5 = 900°
(3)
Here n = 9 , then
sum = 180° × 7 = 1260°
Answer:
2
Step-by-step explanation:
bet
Answer:
55 +20 = 75
then she cuts 15
75-15 = 60
60 cm in milimiters
50*10
600 milimeters is the answer
Step-by-step explanation:
