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Do all triangles have at least two acute angles?
Yes
Are all obtuse triangles similar?
No not all obtuse triangular are similar. :)
Is the Pythagorean theorem is true for all similar triangles?
Only right triangles.
Are two right triangles similar if an acute angle of one triangle is congruent to an acute angle of the other triangle?
Yes, you have two congruent angles in each triangle, one right and one acute so the third angles must be equal also.
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 all acute and right triangles similar?
no
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Are acute triangles similar?
Not necessarily. Just because two triangles are both acute doesn't make them similar. They could be similar, but not necessarily.
Can an acute and obtuse triangle be similar?
No. Similar triangles have all the same angles. An acute triangle can never have an obtuse angle, so the two cannot be similar.
When will two right triangles be similar?
To prove that two right triangles are similar, all you need to show is that one of them has one acute angle that's equal to one acute angle of the other one.
Are equilateral triangle are acute?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Are acute-angled triangles similar?
Similar in the number of sides but not congruent
Do all acute triangles have only one acute angle?
No. All triangles MUST have at least two acute angles.
Can you draw two acute triangles that are not similar?
Yes, you are allowed to draw two acute angled triangles. Acute means less than 45 degrees. - lovelytoes
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.
Two right triangles are similar if the acute angles of one triangle are congruent to the acute angles of the other triangle?
yes there similar
