If a solid consists of three lateral faces and a base that are congruent isosceles triangles, what type of solid is it? . a. octahedron . b. triangular pyramid . c. right triangular pyramid . d. regular rectangular prism .

The answer could possibly be letter c which is ‘ Right triangular pyramid ‘ if not , then the answer will be D

B. triangular pyramid.

Step-by-step explanation:

-Octahedron has eight faces that are equilateral  triangles, six vertices and twelve edges.

-Triangular pyramid has four triangular faces that have congruent isosceles triangles in which one of them is considered the base.

-Right triangular pyramid has a triangle base, three faces and six edges and the line that is located between the centre of the base and the vertex is perpendicular to the base.

-Regular rectangular prism has twelve sides, 8 vertices and six rectangular faces.

According to this, the answer is triangular pyramid.

step-by-step explanation:

the shape,the size and the distance

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: