Valve
V 1 acute
A 3 acute, 2 obtuse
L 1 right angle
V 1 acute
E 4 right angles
Hope this is the answer you were looking for :)
NO!!! The word 'perpendicular' means that the lines intersect at 90 degrees (right anhles).
Acting thick/dumb on purpose.
A Rectangle or a square. The word 'rectangle' comes from Latin and means 'Right(Recto) Angles'.
NO!!!! The word 'perpendicular' means 'at right-angles'. or '90 o'.
An equilateral triangle- a triangle with 3 equal sides, so the triangle would have 3 congruent angles as well.A trick to remember this: the word equal is sort of in the word equilateral.
PANT. P has 3 right angles A has 3 acute and 2 obtuse angles N has 2 acute angles T has 2 right angles
A rectangle has no acute angles and no obtuse angles. It has 4 right angles.
MATHEMATICS
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ALLAY
NO!!! The word 'perpendicular' means that the lines intersect at 90 degrees (right anhles).
NO!!!! The word rectangle means, from Latin , Right angle. A polygon of four sides, that are not at right angles is a QUADRILATERAL.
obtuse
I assume that the second use of the word "triangle" in the question should be angle. An obtuse triangle must have two acute angles.
The word 'Triangle' is a collective noun for different shaped triangles. They are ;- Equilateral(Acute) ; all sides are the same length , and all angles are 60 degrees. Isosceles (Can be Obtuse) ; two sides are the same length and two angles are equal. Right-angles (only Acute) ; one of the angles is a right angle(90 degrees) Scalene ; All sides are different length and all angles are different values. May be either acute of obtuse. For ALL triangles, on a plane surface, the sum of the interior angles is ALWAYS 180 degrees. NB For triangles drawn on a 3-dimensional surface, ( a sphere ; the Earth) the angles may add to 360 degrees.