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None but its apex is perpendicular to its base
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Is a acute triangle an isosceles?
If it has 2 equal acute angles and 1 obtuse angle then it is an isosceles triangle.
What are perpendicular and parallel lines on a polygon?
A polygon need not have ANY perpendicular or parallel lines. For example, consider an equilateral triangle. It can happen that two sides of a polygon, extended if necessary, meet at a point where they form a 90 degree angle. Those two lines are perpendicular. There may be pairs of lines such that, no matter how far you extend them in either direction, they will never meet. Such lines are parallel. A triangle cannot have parallel lines but it can have perpendicular lines. Any polygon of 4 or more sides can have sides that are perpendicular or parallel (or some of each).
A scalene triangle may be isosceles?
false
Why is it an isosceles triangle?
When a triangle has 2 sides that are equal in length it is isosceles from Latin and Greek words. Isosceles may also be a mathematical geometric shape with at least 2 sides having the same length.
Is it true or false that an isosceles triangle may have a right angle?
It is true.
Is triangle a symmetry?
Only if its in the form of an equilateral triangle or a isosceles triangle will it have lines of symmetry.
Is a acute triangle an isosceles?
If it has 2 equal acute angles and 1 obtuse angle then it is an isosceles triangle.
What are perpendicular and parallel lines on a polygon?
A polygon need not have ANY perpendicular or parallel lines. For example, consider an equilateral triangle. It can happen that two sides of a polygon, extended if necessary, meet at a point where they form a 90 degree angle. Those two lines are perpendicular. There may be pairs of lines such that, no matter how far you extend them in either direction, they will never meet. Such lines are parallel. A triangle cannot have parallel lines but it can have perpendicular lines. Any polygon of 4 or more sides can have sides that are perpendicular or parallel (or some of each).
Does an isosceles triangle have a right angle in it?
An isosceles triangle may have a right angle, but a right angle is not a requirement of all isosceles triangles.
How many parallel lines and perpendicular does a trazioud have?
A trapezoid has 2 parallel lines. It may or may not have perpendicular lines.
A scalene triangle may be isosceles?
false
Is an isosceles triangle is a quadrilatearal?
Oh heavens no. A QUADrilateral means that it has 4 sides and the definition of a triangle is three sides. An isosceles triangle is specifically a triangle with two sides of the same length and one with a different length. You may be confused and wondering if a triangle is a polygon and yes, they are. A polygon is any shape with straight lines that don't intersect.
Are intersecting lines perpendicular or not perpendicular?
Intersecting lines may or may not be perpendicular. If the angle of intersection between two intersecting lines is 90 degrees, then the two lines are perpendicular. Otherwise, the lines are not perpendicular. For example: A | | | B ----|----- | | Here, the lines A and B are intersecting. The angle between A and B is 90 degrees. Therefore, line A and line B are perpendicular to each other.
How do you use the word perpendicular lines in a sentence?
Perpendicular lines may form a "tee" or a "cross"
Does a diamond have perpendicular lines?
The cut of a diamond may contain perpendicular lines. The mineral diamond may also have natural perpendicular lines in the lattice, and these are not visible in gem-stone quality diamonds.
Why is it an isosceles triangle?
When a triangle has 2 sides that are equal in length it is isosceles from Latin and Greek words. Isosceles may also be a mathematical geometric shape with at least 2 sides having the same length.
An isosceles triangle may be right or acute but never obtuse.?
False
