Answer:
Answer D
Step-by-step explanation:
Answer:
plus and minus
Step-by-step explanation:
example : 3 ± 5 = 8 or -2
Answer:

Step-by-step explanation:
Given two lines with the equations:

First of all, let us learn the formula for finding the angle between the two lines with given equations:

are the slopes of the two lines respectively.
Let us convert the given equation to point intercept form.
Point intercept form of a line is given as:


Comparing with slope intercept form, we get:

Using the above formula:

Therefore, the acute angle between the two lines is 
Answer:
1,2,3,4,6: they all have equal angles and ticks. They are congruent
Step-by-step explanation:
Answer:
Congruent means all the same size and shape
Equilateral triangle has all the sides the same length, so it would be equilateral
Step-by-step explanation: