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# What is a plane triangle?

Updated: 4/28/2022

Wiki User

13y ago

a plane triangle is a normal triangle, like the isosceles, right angled, equilateral and scalene triangle.

Wiki User

13y ago

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Q: What is a plane triangle?
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### Is the set of points that lie on the plane of the triangle but does not include the points on the triangle?

The complement of the triangle in the plane.

### Difference of plane and spherical triangles?

A plane triangle looks like a common triangle. A plane triangle is solved with linear units. A spherical triangle is found inside of a sphere. This type of triangle is solved with angular units.

### What geometric objects occupies two dimensions?

Triangle Plane Square

It is a triangle

No.

### Is a triangle a solid figure?

No- a triangle is a plane figure, not a solid.

### What does a triangle turned 180 degrees look like?

A triangle. The effect of turning will depend on whether the plane containing the triangle is rotated - that is, the triangle is rotated around an axis perpendicular to its plane. In that case, it will appear upside down. Alternatively, it can be rotated about an axis in the plane of the triangle. In this case it will appear flipped.

### Is an equilateral triangle always a right triangle?

No, never in plane geometry.

### What can fall outside a triangle?

Every point in the plane outside the triangle can fall there!

### Can a triangle be coplanar?

In Euclidean plane geometry every triangle MUST BE coplanar.

### How many degrees in an external triangle?

There are 180 degrees in every plane triangle.

Yes.