• Polygons & Quadrilaterals Geometry Answers
• Geometry Quadrilaterals Review
• Polygons And Quadrilaterals Test

Unit 7 Lesson 1 Angles in Polygons. Notes for Unit 7. Notes for Unit 7 Lesson 2. Unit 7 Lesson 3 Proving That a Quadrilateral Is a Parallelogram.

Isosceles Trapezoid A (called a trapezium in the UK) has a pair of opposite sides parallel. And a trapezium (called a trapezoid in the UK) is a quadrilateral with NO parallel sides: Trapezoid Trapezium In the US: a pair of parallel sides NO parallel sides In the UK: NO parallel sides a pair of parallel sides (the US and UK definitions are swapped over!) An Isosceles trapezoid, as shown above, has left and right sides of equal length that join to the base at equal angles. The Kite Hey, it looks like a (usually). It has two pairs of sides: Each pair is made of two equal-length sides that join up. Also:.

the angles where the two pairs meet are equal. the diagonals, shown as dashed lines above, meet at a right angle. one of the diagonals bisects (cuts equally in half) the other.

And that's it for the special quadrilaterals. Irregular Quadrilaterals The only (all sides equal and all angles equal) quadrilateral is a square. So all other quadrilaterals are irregular.

Polygons & Quadrilaterals Geometry Answers

The 'Family Tree' Chart Quadrilateral definitions are inclusive. Example: a square is also a rectangle. So we include a square in the definition of a rectangle. (We don't say 'Having all 90° angles makes it a rectangle except when all sides are equal then it is a square.' ) This may seem odd, as in daily life we think of a square as not being a rectangle. But in mathematics it is.

Using the chart below we can answer such questions as:. Is a Square a type of Rectangle?

Geometry Quadrilaterals Review

(Yes). Is a Rectangle a type of Kite? (No) 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.

Polygons And Quadrilaterals Test

Polygon A quadrilateral is a. 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 with Them Now that you know the different types, you can play with the. Other Names A quadrilateral can sometimes be called.