No. The sum of the three angles of a triangle are 180 degrees. If all the sides are congruent, then so are the angles. So each of them is one third of 180 degrees, or 60 deg.
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In general, usually not. It is possible for a right triangle to have 2 congruent sides; this makes it an isoceles right triangle. This shape is often seen in architecture.
SSA is ambiguous. If A is not a right angle, then there are two possible configurations for the triangle. So they need not be congruent.
The four congruence theorem for right triangles are:- LL Congruence Theorem --> If the two legs of a right triangle is congruent to the corresponding two legs of another right triangle, then the triangles are congruent.- LA Congruence Theorem --> If a leg and an acute angle of a right triangles is congruent to the corresponding leg and acute angle of another right triangle, then the triangles are congruent.- HA Congruence Theorem --> If the hypotenuse and an acute angle of a right triangle is congruent to the corresponding hypotenuse and acute angle of another triangle, then the triangles are congruent.- HL Congruence Theorem --> If the hypotenuse and a leg of a right triangle is congruent to the corresponding hypotenuse and leg of another right triangle, then the triangles are congruent.
A scalene right triangle is a triangle that has no congruent sides and and one right angle.
A right isosceles triangle.