A quadrilateral is a polygon in Euclidean plane geometry with four edges (sides) and four vertices (corners)
A triangle has three sides, three vertices, and three angles. The sum of the three interior angles of a triangle is always 180°. The sum of the length of two sides of a triangle is always greater than the length of the third side
Answers & Comments
Answer:
1.Triangle
2.quadrilateral
3.Triangle
Step-by-step explanation:
A quadrilateral is a polygon in Euclidean plane geometry with four edges (sides) and four vertices (corners)
A triangle has three sides, three vertices, and three angles. The sum of the three interior angles of a triangle is always 180°. The sum of the length of two sides of a triangle is always greater than the length of the third side