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Q: What shapes have congruent base angles?
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Can two shapes be congruent and not similar?

In short, no. Similar shapes are shapes in which all corresponding angles congruent regardless of the length of the sides. Congruent shapes have congruent corresponding angles and corresponding sides. In effect congruent shapes is a special condition of similar shapes.


What are similarities of congruent shapes and similar shapes?

The angles for congruent shapes and the angles in similar shapes are all the same. All the sides are also proportional in both. Basically, all congruent shapes are similar but not all similar shapes are congruent.


When are shapes congruent?

Shapes are said to be congruent when they have the same dimensions and same angles


Is the base angles of a trapezoid congruent?

If the trapezoid is an isosceles trapezoid, with congruent legs, then the base angles are congruent. Otherwise, no.


Does a trapezoid have a congruent angle s?

Yes. The lower base angles are congruent. The upper base angles are congruent.


What two angles have the same measure what is it called?

The two angles are congruent. They are congruentangles. Congruent is basically 'same' in math. We often say congruent shapes, congruent, angles, and congruent sides.


An angle not congruent to the base angles of an isosceles triangle?

The base angles of an isosceles triangle are congruent. The vertex angle of an isosceles triangle is not necessarily congruent to the base angles.


What is the problem if angles are not congruent?

None! If the angles are not congruent then the shapes are not similar of congruent. But that is not a problem. The angles of an equilateral triangle are not congruent to the angles of a square but that does not mean that you cannot work with equilateral triangles or squares!


Are the opposite angles of an isosceles trapezoid congruent?

No but the base angles are congruent


What does congruent mean if shapes are not the same size?

You can have two shapes - a small one and a big one - whose angles are congruent but the sides are not. In that case the shapes are not congruent but similar.


Are shapes with the same area always congruent?

No, they might not have congruent angles, etc.


What angles are congruent in an isosceles trapezoid?

There are two pairs of congruent base angles in an isosceles trapezoid.