Any type of triangle will have angles that add up to 180o. yet two angles of an isosceles triangle are equal
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Yes an isosceles triangle can contain 3 acute angles providing that 2 of them are equal in size and that the 3 angles add up to 180 degrees.
Assuming the question was if an isosceles triangle have angles that add up to 180 degrees, then yes. All triangles have angles that add up to 180 degrees.
ALL triangles - have internal angles that add up to 180 degrees.
Yes, but a triangle is acute only if all three of its angles are acute (< 90o).An isosceles triangle can be an acute triangle, but it doesn't have to be.An acute triangle can be an isosceles triangle, but it doesn't have to be.That depends on the sizes of its angle because an isosceles triangle has 2 equal sides and 2 equal angles which could be 70 degrees, 70 degrees and 40 degrees which are all acute angles that add up to 180 degrees.
Yes providing that the other 2 angles are equal acute angles and that the 3 interior angles add up to 180 degrees.