TRIANGLES
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A triangle has three sides and three angles
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The three angles always add to 180°
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TYPES OF TRIANGLES
QUADRILATERALS
Quadrilateral just means "four sides" (quad means four, lateral means side). Any four-sided shape is a Quadrilateral. But the sides have to be straight, and it has to be 2-dimensional
TYPES OF QUADRILATERALS
General Properties
- Four sides (edges)
- Four vertices or vertexes (corners)
- The interior angles add up to 360 degrees:
Try drawing a quadrilateral, and measure the angles. They should add to 360°
Individual Properties
