Answer:
B. m∠B = 80°
Step-by-step explanation:
Supplementary angles are two angles that sum to 180°
⇒ m∠A + m∠B = 180°
⇒ 100° + m∠B = 180°
⇒ m∠B = 180° - 100°
⇒ m∠B = 80°
Answer:
16, 60, 20
Step-by-step explanation:
This is an equilateral triangle and since the LN is 16, LM must be as well.
The second, again is equilateral, so the angles must all be 60 degrees.
The last question is equilateral so all angles are equal to 60, and 60/3 is equal to 20.
The answer is D pretty sure sorry if wrong
X would be 4 so the answer is B
