This is a triangle. The interior angles of a triangle always add up to 180 degrees. Thus, write an equation representing the sum of the given angles, with "180 degrees" on the right side.
4x-1 + 8x+2 + 71 = 180 degrees.
Solve for x!
1. A 2.B 3.D 4.C 5.D I cant see the full last one I feel confident about 90% correct I'm just not 100% because its hard to read some
First, you have to find out the missing angle of the quadrilateral. We know that there are two right angles, one angle measuring 110° degrees, and that all the angles must add up to 360°.
We can use the equation
90+90+110+x=360
290+x=360
x=70
Now that we found the missing angle, we have the find the value of x.
We know that since it is a straight line, the two angels must add up to 180°
We can use the equation
70+x=180
x=110
Therefore the value of x is 110°
Answer:
C
Step-by-step explanation:
The 3 sides of the triangle are congruent.
The triangle is therefore equilateral with 3 congruent angles of 60° , so
∠ B = 60° → C