ABCDEFGHIJ is a regular decagon and the measure of <D is 144º. What is the measure of <A?
2 answers:
Answer:
1. 144⁰
2. 60⁰
Step-by-step explanation:
The formula to find the measure of the interior angles of a regular polygon is:
m< = (n - 2) • 180/n where n = the number of sides
For a decagon, there are 10 sides.
m< = (10-2) • 180/10 = 144°
A r e g u l a r p o l y g o n / e q u i l a t e r a l t r i a n g l e is defined as having equal sides and angles.
Answer:
given ABCDEFGHIJ is a decagon
As we know the sum of all ten interior angles of a decagon = 1440°
so measure of each angle of decagon = (1440/10)° = 144°
so the measure of ∠A would be 144° (C)
given Δ ABC is a equilateral triangle
As we know the sum of all three interior angles of a equialter traingle = 180°
so if one angle of an equilateral triangle is 60°
then the remaining of the angles would have the measure of 60° each
So answer = 60°(B)
Hope it helps
You might be interested in
I think it’s even because it can be divided by 2
Answer:
C''(-2, -2)
Step-by-step explanation:
Reflection over the x-axis negates the y-coordinate. Reflection over the y-axis negates the x-coordinate. Negating both coordinates of C(2, 2) makes it ...
C''(-2, -2)
X=2/3
The restrictions would be possible x values that could make the function equal 0.
Answer:
c maybe 20
d maybe 33
and i dont know the last one
hola si esto está mal lo siento pero hice mi mejor esfuerzo y feliz gracias dando adiós que tengas un día bendito!
