A rectangle.
The base angles of an isosceles triangle that has two equal sides are equal.
No.Equilateral triangles must have equal angles (all 60 degrees) and equal length sides; there are also:Isosceles triangles which have two equal angles and two equal sides;Scalene triangles which have all three sides, and hence all three angles, of different lengths;Right angled triangles (which can have all sides of different lengths, or two sides of equal length) have (as the name suggests) one right angle. This means Pythagoras and the trigonometric ratios can be used on its side lengths.
Not necessarily. You have described "similar" triangles. If you also know that any of the lengths of sides are of equal measure in addition to three angles (congruent), then the lengths of all of the sides are of equal measure. But with what you have given, consider, for example, two equilateral triangles, both have all angles equal to 60 degrees (satisfying the condition in your question). One of the triangles could have sides length 1 and the other with sides all of length 2.
Yes, a parallelogram has four sides and four internal angles, the opposite side lengths are equal and the opposite angles are equal.
It is a 4 sided quadrilateral Its base angles are equal in size It has 2 equal acute and 2 equal obtuse angles Its 4 angles add up to 360 degrees It has a pair of parallel sides of different lengths It has 1 line of symmetry Its perimeter is the sum of its 4 sides Its area is 0.5*(sum of parallel sides)*height
As well as the the 3 sides of an equilateral triangle being equal in lengths so are its 3 interior angles equal in angles of 60 degrees.
looawawer The sides are of equal lengths and the internal angles are each 60 degrees.
The type of quadrilateral formed depends on the specific properties and measurements of its sides and angles. For example, if all sides are equal and all angles are 90 degrees, it is a square. If opposite sides are equal and angles are not necessarily 90 degrees, it is a rectangle or a parallelogram. If all sides are of different lengths and no angles are equal, it is an irregular quadrilateral.
Any equilateral triangle has 3 sides of equal lengths and 3 equal interior angles of 60 degrees. 3*60 = 180 degrees.
Squares have four sides of equal length and four right angles.Rhombuses (rhombi) have four sides of equal length but the angles are not right angles. Rectangles have four right angles but the sides are not all of the same length.
A square, rectangle, or parallelogram. Depends on the angles and the lengths of the sides.
No.A regular polygon has equal side lengths and equal angles.
Equilateral? * * * * * No. Equilateral means only that the sides have equal lengths - not that the angles are also equal. A rhombus, for example is equilateral but not equiangular. The correct answer is "regular".
The base angles of an isosceles triangle that has two equal sides are equal.
No.Equilateral triangles must have equal angles (all 60 degrees) and equal length sides; there are also:Isosceles triangles which have two equal angles and two equal sides;Scalene triangles which have all three sides, and hence all three angles, of different lengths;Right angled triangles (which can have all sides of different lengths, or two sides of equal length) have (as the name suggests) one right angle. This means Pythagoras and the trigonometric ratios can be used on its side lengths.
If all 4 sides are equal and the angles are not 90 degrees it is a rhombus.
A shape with seven sides is called a heptagon. Heptagons can be regular, with all sides and angles equal, or irregular, with varying side lengths and angles. The sum of the interior angles of a heptagon is 900 degrees.