Which properties belong to all isosceles triangles? Check all that apply.

a. The base angles are congruent. All three angles are congruent.

b. The two sides opposite the base angles are congruent. All three sides are congruent.

c. The bisector of the vertex angle is the perpendicular bisector of the base.

A. The base angles are congruent.

              C. The two sides opposite the base angles are congruent.

               and E. The bisector of the vertex angle is the perpendicular         bisector of the base.

Step-by-step explanation:

All Isosceles tringles have two congruent sides, and the angles opposite those sides will be congruent. Because the angles are congruent so is the base angles of an isosceles triangle.

This answer was meant to be a check all that apply so please put the answers separately next time.

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

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step-by-step explanation: