Answer:
∠2 = 115.5°
Step-by-step explanation:
128.5° is an exterior angle of the triangle
The exterior angle equals the sum of the 2 opposite interior angles, hence
∠2 + 13 = 128.5 ( subtract 13 from both sides )
∠2 = 115.5°
For this case we have that by definition, the circumference of a circle is given by:
Where:
d: It is the diameter of the circle
They tell us that:
Substituting:
Thus, the circumference of the circle is 55 centimeters.
Answer:
Option B
Answer:
A net with a square base and 4 triangular side
Step-by-step explanation:
Answer:
88 degrees
Step-by-step explanation:
This is an isosceles triangle, meaning that the interior angles next to the base will always be the same.
The interior angles of a triangle will always add up to 180 degrees.
So:
46 + 46 = 92
180 - 92 = 88 degrees