B.Point
C.Plane
D.Ray
Point.
This is one of the classic problems of Euclidean geometry.
The angle is determined by three points, we call it A, B, C, with A ≠ C and B ≠ C.
We denote an angle with three points and a symbol ∠. The middle point is always the vertex. We can also give angle names only with vertices. For example, based on the attached image, the angle can be denoted as ∠BAC, or ∠CAB, or ∠A.
Types of Angles
Note:
Undefined terms are the basic figure that is not defined in terms of other figures. The undefined terms (or primitive terms) in geometry are a point, line, and plane.
These key terms cannot be mathematically defined using other known words.
Keywords: the definition of an angle, the undefined term, line, point, line, plane, ray, endpoint, acute, obtuse, right, straight, Euclidean geometry
The definition of an angle uses the undefined term is . Option (B) is correct.
Further Explanation:
Given:
The options are as follows,
A. Line
B. Point
C. Plane
D. Ray
Explanation:
A point is a location on the graph or at any surface.
A line is the distance between the two points that extends to infinite in both directions.
A ray is defined as the distance between the two points that extends to infinite in one direction.
Plane extends in two dimensions.
The definition of an angle uses the undefined term is . Option (B) is correct.
Option (A) is not correct.
Option (B) is correct.
Option (C) is not correct.
Option (D) is not correct.
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Answer details:
Grade: High School
Subject: Mathematics
Chapter: Line and Rays
Keywords: definition, angle, undefined term, line, point, ray, plane, an angle, points, extend, infinite.
Answer:
Step-by-step explanation:
You know that 9 = 10 - 1.
Then 9 of something is equal to 10 of it less one of it. Here, that "something" is four.
_____
Comment on this math
This illustrates a shortcut for multiplying by 9 that can be convenient for mental arithmetic. The idea is to multiply by 10, which just involves adding 0 (or moving the decimal point), then subtract the original number.
-7/12 divided by 1/7
Answer:
-4 1/12
i just put it in a calculator
Answer:
3:23
Step-by-step explanation:
If 19 of the 23 participants in a triathlon are men then that means there are 4 participants that are women
so the ration would be 4 women for the 23 participants
The ratio of the number of women participating to the total number of participants in the triathlon is 4:23.
In a triathlon, there are 23 participants in total, with 19 of them being men. To find the ratio of women to the total number of participants, we first need to determine the number of women participating.
To do this, subtract the number of men (19) from the total number of participants (23):
23 (total participants) - 19 (men) = 4 women
Now that we know there are 4 women participating, we can calculate the ratio:
Number of women : Total number of participants
4 : 23
So, the ratio of the number of women participating to the total number of participants is 4:23.
Learn more about Ratio
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Answer:
Step-by-step explanation:
To prove the straight line is tangent to the circle:
(1)
substitute x = 2y + 5 into x² + y² = 5
x² + y² = 5
(2y + 5)² + y² = 5
4y² + 20y + 25 + y² = 5
5y² + 20y + 20 = 0
y² + 4y + 4 = 0
(2)
discriminant of y² + 4y + 4 = 0 has to be equals to 0
D = 4² - 4(1)(4)
D = 0
∴ Proven