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Complex Quadrilaterals. Oh Yes! when two sides cross over, we call it a "Complex" or "Self-Intersecting" quadrilateral, like these: They still have 4 sides, but two sides cross over. Polygon. A quadrilateral is a polygon. In fact it is a 4-sided polygon, just like a triangle is a 3-sided polygon, a pentagon is a 5-sided polygon, and so on. Play ...
It also has 4 angles of equal measure, all of which are 90^{\circ} or right angles. This quadrilateral also has 2 pairs of parallel sides. 2 Name the specific type of quadrilateral. Since the sides are not all the same length, this quadrilateral is a rectangle, not a square. Since the shape has two pairs of parallel sides, it is also a ...
Properties of Quadrilaterals. Let us understand in a better way with the help of an example: It has four sides: AB, BC, CD, and DA. It has four vertices: Points A, B, C, and D. It has four angles: ∠ABC, ∠BCD, ∠CDA, and ∠DAB. ∠A and ∠B are adjacent angles. ∠A and ∠C are the opposite angles.
- 105 min
A quadrilateral is a closed shape that is formed by joining four points among which any three points are non-collinear. In simple words, a quadrilateral is a polygon with 4 sides, 4 angles, and 4 vertices. Let us learn more about the quadrilateral shape, the properties of quadrilaterals, the different types of quadrilaterals along with a few ...
A self-intersecting quadrilateral is called variously a cross-quadrilateral, crossed quadrilateral, butterfly quadrilateral or bow-tie quadrilateral. In a crossed quadrilateral, the four "interior" angles on either side of the crossing (two acute and two reflex , all on the left or all on the right as the figure is traced out) add up to 720°.
Example 6: quadrilaterals. Describe how the quadrilaterals are the same and how they are different. Name them. Examine the properties of the quadrilateral, including side and angle relationships. Show step. Quadrilateral A A has two pairs of opposite parallel sides and two pairs of opposite congruent sides. Quadrilateral A A also has two pairs ...
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A quadrilateral is called a concave quadrilateral if at least one diagonal, i.e. the line segment joining the vertices is not a part of the same region of the quadrilateral. Convex quadrilaterals: In convex quadrilaterals, each interior angle is less than 180°. A quadrilateral is convex if the line segment joining any of its two vertices is in ...
