<h3>
Answer: B) 10</h3>
For any n sided regular polygon, there are n lines of symmetry. A regular decagon has n = 10 sides, so there are 10 lines of symmetry.
Answer:
The area of the large sail of the sailboat is 144 feet² .
Step-by-step explanation:
Given as :
The measure height of the large sail = 24 feet
The measure of base of the sail = 12 feet
The area of the sail = A feet²
Now, <u>Since The sail of the sailboat is in the form of right angle triangle</u>
So, From The area right angle triangle
Area of right angle Triangle = × height × base
Area = × height of the sail × base of sail
Or, A = × 24 × 12
Or , A =
∴ A = 144 feet²
So, the area of sail = 144 feet²
Hence The area of the large sail of the sailboat is 144 feet² . Answer
We know that
The inscribed angle Theorem states that t<span>he inscribed angle measures half of the arc it comprises.
</span>so
m∠D=(1/2)*[arc EFG]
and
m∠F=(1/2)*[arc GDE]
arc EFG+arc GDE=360°-------> full circle
applying multiplication property of equality
(1/2)*arc EFG+(1/2)*arc GDE=180°
applying substitution property of equality
m∠D=(1/2)*[arc EFG]
m∠F=(1/2)*[arc GDE]
(1/2)*arc EFG+(1/2)*arc GDE=180°----> m∠D+m∠F=180°
the answer in the attached figure