Answer:
See below.
Step-by-step explanation:
m∠A + m∠B = m∠B + m∠C
Use the subtraction property of equality to subtract m<B from both sides of the equation.
m∠A + m∠B - m<B = m∠B - m<B + m∠C
m∠A = m∠C
Answer:
−c=d−r−a
Step-by-step explanation:
if we move a value to the other side of the equal sign, the value switches positive and negative signs, in this case A moved to the right, which caused it to turn negative.
Answer:
63-degrees
Step-by-step explanation:
triangle = 180 degrees
46 + 71 + w = 180
117 + w = 180 *subtract 117 from both sides*
w = 63
Answer:
A
Step-by-step explanation:
Using Pythagoras theorem, we have
x^2+11^2=15^2, x^2=104, x=2*sqrt(26)
Answer:
3 (10-a) = 4 i think
Step-by-step explanation:
