Answer:
20√3 cm
Step-by-step explanation:
Altitude of an equilateral triangle splits it into 2 equal right triangles, it bisects the base and the angle opposite to the base.
<u>Let the altitude be x. Then as per Pythagorean theorem:</u>
- x² = 40² - (40/2)²
- x²= 1600 -400
- x²= 1200
- x= √1200
- x= 20√3 cm
<u>Correct choice is</u> the second one
Just answered this one a few minutes ago.
(-5)(-5)(3)= 75
Answer:
the answer is h 86.8 first you gotta take all the numbers then drop the two lowest then you multiply the ones you hsve left then divide it by the number of grsdes there is
Answer:
Second box for Justifications: Subtraction Property of equality
Third box for steps: 
Fourth box for steps: 
Fourth box for Justifications: Multiplication Property of equality
Fifth box for steps: 
Answer:
<h2>A plane consists of an infinite set of lines.</h2><h2>A line has one dimension, length.
</h2>
Step-by-step explanation:
The choices are
- A point in the form (x, y) has two dimensions.
- A plane has a definite beginning and end.
- A line has one dimension, length.
- A point consists of an infinite set of lines.
- A plane consists of an infinite set of lines.
In Ecludian geometry, undefined term are the plane, point and line. Becasue these terms are too intuitive, we don't need to demonstrate them, they just exits, they are too primitive to be defined, that's why they are undefined term.
However, there are some characteristics about each term, for example, a line and a plane are infinite, the plane is formed by infinite of lines and the line is formed by infinite set of points. Additionally, a line has one dimension only, because it's formed by infinte set of points, which doesn't have a dimensions as a singular term, but all together form a length.
Therefore, the right answers are C and E.
