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True or false highly-directional antennas are generally concave dish-shaped devices?
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What is a nonconvex polygon?
A nonconvex polygon is a concave polygon. All polygons with 4 or more sides can be concave. An arrowhead is an example of a concave quadrilateral. The back of an envelop (where the sides are folded and glued together) is a concave pentagon.
What polygon looks like a bow tie?
A concave hexagon or a concave octagon.
When you can tell the graph of quadratic function concave upward or downward?
If the sign of the term involving x2 is positive then it is concave upward, provided everybody agrees what concave upwards means. Just like y=x2 is concave upwards.
Can a parallelogram be concave?
No a parallelogram cant be concave because the only parrallelograms there are arent concaveParallelograms...*rectangle *square* rhombus*rhomboidMeaning of concave-polygons that have parts that go into the shape.
What is a concave polygons?
a concave polygon is that polygon whose at leat one of the angles is greater than 180 degree
How does concave graph look like?
Many graphs that appear concave from one side will appear convex from the other. A smooth graph is generally described as concave if it is increasing AND if the rate of increase is also increasing. In terms of calculus this requires the first and second derivative to be positive. A concave polygon is one in which at least one of the vertices forms a reflex angle.
What is the opposite of Convex?
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
Is concave a parallelogram?
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.
What type of mirror is used by dentist- plano concave or concave?
plano concave
Is concave mirror in shape of parabola?
no concave mirror is in shape of concave mirror
Is an arrow concave or convex?
Concave, because you can connect the corners from the outside.
Is concave curved in or out?
concave=in convex=out
Is a rectangle a convex or concave?
Rectangle
Concave in a sentence?
His glasses have a concave lens.
What is the inside of a spoon concave or convex?
concave
Is a headlamp reflector concave or convex?
concave
Does a quadrilateral have a convex or a concave angle?
concave
