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Is All isosceles triangles are similar true or false?
false
The base angles of an isosceles trapezoid are not congruent true or false?
False
The diagonals of a square from 6 pairs of congruent triangles true or false?
False. There are 6 pairs of smaller congruent triangles and two pair of larger ones.
If a quadrilateral is a parallelogram then its opposite angles are always supplementary?
False because it will have 2 equal opposite obtuse angles and 2 equal opposite acute angles with the 4 angles adding up to 360 degrees.
True or false An isosceles triangle can be scalene?
Absolutely false. A scalene triangle by definition has no side equal to another. An isosceles triangle by definition has two equal sides.
Isosceles triangles may be obtuse or acute but never right?
false
An isosceles triangle may be right or acute but never obtuse.?
False
Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
True or false all isosceles triangles are also equilateral triangles?
False.
Can an angle be both obtuse and isosceles true or false?
False
Is All isosceles triangles are similar true or false?
false
Are all equilateral triangles isosceles true or false?
False. Equilateral triangles are equilateral. All isosceles triangles have two of the sides the same, with the hypotenuse being longer than the other two.
True are false are all equilateral triangles are isosceles?
False. Equilateral triangles are equilateral. All isosceles triangles have two of the sides the same, with the hypotenuse being longer than the other two.
True or false All equilateral triangles are also isosceles triangles?
True
Is it true that an obtuse triangle can have a right angle?
In Euclidean geometry, a triangle must be one of these: acute, obtuse, or right. Maybe there is a non-Euclideangeometry for which some obtuse triangles can contain a right angle, but it doesn't happen in Euclidean geometry.
Do isosceles triangles must include a 90 angle true or false?
False.
Is it false an obtuse triangle is never right?
It's true that an obtuse triangle is never right because obtuse triangles are bigger than right triangles, which are 90 degrees. Obtuse Triangles are always bigger than Right triangles(90 degrees) , so It is true.
