An isosceles triangle is a special type of triangle that has two equal sides. Consequently, the two base angles are also equal. Since the interior angles of a triangle should sum up to 180°, the general equation should be
180° = 2*Base angle + Vertex angle
Let the base angle be x. Thus, the vertex angle is equal to
Vertex angle = 4x - 6
Substituting,
180 = 2x + 4x - 6
x = 31°
Vertex angle = 4(31°) - 6
Vertex angle = 118°
Cross multiply then solve for x:
3/2 * 125/x
2*125 = 250
3 * x = 3x
3x = 250
x = 83.33 = 83 (rounded)
Answer:
the one with the blue dot is correct.
Step-by-step explanation:
because when you dilate the triangle you increase it and in this case if you do it ABC ~ADE
First one.
tan(pi/2) is the asymptote, and 2pi/4*x = pi/2*x, between 0<x<2, goes from 0 to pi, so it only passes thru pi/2.
FIRST one
