Answer:

1. yes, All triangles have three sides and three angles, but they come in many different shapes and sizes.
2. yes, Every quadrilateral has 4 sides, 4 vertices, and 4 angles.
3. yes, Any quadrilateral can be divided into two triangles as shown in the images below
4. no, A polygon is a closed geometric figure whose sides are simple line segments. Each corner of a polygon where two sides intersect is called a vertex of the polygon.
5. yes, A quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals.

Step-by-step explanation:

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