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sergey [27]
3 years ago
12

How can you prove a triangle is an equilateral triangle? (4 points)

Mathematics
1 answer:
Phoenix [80]3 years ago
6 0

Answer:

A would be correct.

Step-by-step explanation:

Just show that triangles AOB,BOC,COA are all congruent (then all the sides of triangle ABC must be equal). To show this, note that triangles A′BO,A′OC are equilateral since they are all radius of the circles. Line OA′ is perpendicular to line BC. Hence, ∠OBC=∠OCB=30∘.

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If you split a right angle with a ray going through the middle of the right angle, the two angles formed will be ______. Select
Tom [10]

Answer:

Complementary

Step-by-step explanation:

To be complementary, your two angles need to add up to 90 degrees

a right triangle is already 90 degrees so if you cut it through the middle they'd form complementary angles

8 0
3 years ago
Read 2 more answers
If a bicycle wheel has a diameter of 21 inches what the exact circumference?
Blababa [14]

Answer:

Circumference = 65.97344573

Step-by-step explanation:

Given the diameter of a circle, we can use the formula C = πd to find the circumference.

C = circumference

π = pi

d = diamater

Equation: 21(π) = 65.97344573

Make sure to round to whatever decimal place is asked for!

6 0
3 years ago
Timothy has a fenced-in garden in the shape of a rhombus. The length of the longer diagonal is 24 feet, and the length of the sh
Rzqust [24]
One property of the diagonals of a rhombus is that they are perpendicular bisectors of each other. So 4 congruent right triangles will be formed when you draw the two diagonals. Considering one right triangle, we can solve for the two sides by dividing them by 2.
24 ft/ 2 = 12 ft
18 ft/ 2 = 9 ft

Using the Pythagorean Theorem, we can now solve for the hypotenuse which is the side of the rhombus.
side = √(12²+9²) = 15 ft

The answer is B.
8 0
2 years ago
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During the first part of a hike, Andre drank 1.5 liters of the water he brought. If this is 50% of the water he brought, how muc
ira [324]

Answer:

50/100 x X = 1.5

x 100       x100

50x = 150

÷50   ÷50

X = 3

X = 3 liters I am pretty sure

5 0
3 years ago
How does a loud sound differ from a soft sound?
Brilliant_brown [7]
You can hear it better
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2 years ago
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