An isosceles triangle has congruent base angles, so if one of the base angles measure 54 degrees, then the other base angle does, too.
And a triangle measures up to 180 degrees.
180 = x + 2(54)
180 = x + 108
x = 72
So the answer is B) 72
Answer:
2 , 3
Step-by-step explanation:
Let M the middle of AB
M=((-3+5)/2,(5+(-3))/2)=(1,1)
Slope of AB= (-3-5)/(5+3)=-8/8=-1
Slope of the perpendicular : -1*?=-1=>?=1
Equation :y-1=1*(x-1)==>y=x
Answer: E) x = 19
<u>Step-by-step explanation:</u>
PA and TR are the top and bottom bases.
Therefore, ∠T ≅ ∠R and ∠P ≅ ∠A.
Thus, ∠P and ∠T are supplementary (sum equals 180°)
∠P + ∠T = 180
5x + 9 + 4x = 180
9x + 9 = 180
9x = 171
x = 19