What type of triangle is shown? (3 points) A. Obtuse triangle
B. Isosceles triangle
C. Right triangle
D. Equilateral triangle

B. isosceles triangle

Step-by-step explanation:

B

Step-by-step explanation:

no angles shown are obtuse

there are no right angles in the triangle

none of the sides are equal

only two sides are equal which is what makes an isosceles triangle

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

a: 1/6, j: 1/4

step-by-step explanation: you are welcome