Answer:
Step-by-step explanation:
Δx = 10-(-6) = 16
Δy = -3-11 = -14
(-6+16/3, 11-14/3) = (-⅔, 6⅓)
(10-16/3, -3+14/3) = (4⅔, 1⅔)
Answer:
N.14 ABC = 5x+20, N.15 ABE = 90. N.16. 123, 29, 28. N.17 K = 80
Step-by-step explanation:
Because of vertical angles, 5x+20 = 3x+66.
5x=3x+46
2x = 46
x = 23
Sum of angles in a circle is 360
360-135-135=180
ABE = CBD because vertical angles.
180 / 2 = 90
16.
Sum of angles in triangle is 180
180=123-x-2-x-3
x = 31
123, 29, 28.
17.
Sum of angles in triangle is 180
180-72-28 = 80
K = 80
Answer:
<BCE=130°
Step-by-step explanation:
<BCE + <HCE=180° (Angles on a straight line)
<BCE+50°=180°
<BCE=180°-50°
<BCE=130°