because if you notice, each of the angles have a little arc in the corner, which means they are congruent. if all three angles are congruent, that means each angle is 60° because each triangle has a maximum value of 180°. therefore, this means it is an equilateral triangle.
that being said, each side must be equal as well. so, you can use any two sides to find x by using each one on a different side of an equation, then isolating and solving.
5x - 5y >= 70 Move the 5x to the right by subtracting 5x from both sides - 5y >= -5x + 70 Divide both sides by -5 and when you divide by a negative you have to change the inequality sign. y <= x - 14 Letter B
The undefined term which is used to define an angle is line i.e., . Further explanation: In geometry the three terms which are considered to be undefined are line, point and plane.
