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Not at all. It one angle is 90° it is a right triangle. If any angle is greater than 90° then it is an obtuse triangle. Picture a triangle with angles of 10° 10° and 160° ■
At least two of the three angles must be acute, or less than 90 degrees. The other may be acute, a right angle (90 degrees), or an obtuse angle (greater than 90 degrees). In a flat plane (Euclidean) the three angles always add up to 180 degrees.
What else can I help you with?
Is all acute triangles similar?
Only if they have the same angles
Do all triangles have at least two acute angles?
Yes
Is a triangle 180 degrees or 360 degrees?
Triangles whether acute, obtuse, equilateral or scalene will only ever have angles that add to 180 degrees.
Are Isosceles triangles right obtuse and acute?
yes a isosceles triangle has a right,obtuse and acute angle.
What are three ways to classify a triangles by its angles?
The three kinds of triangles are:right triangle :one of the angles is a right angle (i.e. measures 90 degrees)acute: All of the angles measures less than 90 degrees. A special case of acute isthe equiangular or equilateral triangle in which all angles measure 60 degrees;obtuse: One of the angles measure more than 90 degrees.
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Are equilateral triangle are acute?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Do all acute triangles have only one acute angle?
No. All triangles MUST have at least two acute angles.
Are all acute triangles equilateral triangles?
No, but all equilateral triangles are acute. Acute: All angles of the triangle are less than 90 degrees. Equilateral: All angles of the triangle are 60 degrees.
Are all Equilteral triangles are acute triangles?
Yes.
Which shapes have acute angles?
All triangles have at least two acute angles. Acute triangles have three. Rhomboids also have two acute angles.
Can you show me the equilateral that is also an acute triangles a pictue of it?
All equilateral triangles are acute triangles, since all the angles are less than 90 degrees.
Which triangles are acute triangles?
An acute triangle has all three angles less than 90 degrees.
What types of triangles have at least two acute angles?
All triangles need at least two acute angles
Do all triangles have an acute angle?
All triangles have at least 2 acute angles. All 3 angles of a triangle will equal 180 degrees.
Do all triangles have two acute angles?
INCORRECT: No because there is a obtuse triangle and a right triangleCORRECT ANSWERYes all triangles have at least two acute angles. Obtuse triangles and right triangles also have at least two acute angles. They are called obtuse triangles and right triangles because by definition they are triangles with ONE obtuse angle and ONE right angle. So therefore they both have 2 acute angles. Also for an acute triangle, it would have 3 acute angles.
Are all acute and right triangles similar?
no
