Elvis Presley was born in Mississippi and has an estimated net worth of $300 million. A singer and musician, Elvis popularized rock and roll in the 50's. Known for his wild performance style, good looks, and musicianship (largely influenced by African-American rhythm and blues), Elvis took the world by storm.
Right Triangle Similarity Acute Angle Similarity If one of the acute angles of a right triangle is congruent to an acute angle of another right triangle, then by Angle-Angle Similarity the triangles are similar. In the figure, â  M â â  Y , since both are right angles, and â  N â â  Z .
For triangles only, equiangular and equilateral have the same implications: all sides and angles are congruent. Isosceles triangles have at least two congruent sides and two congruent angles. Right triangles contain an angle whose measure is 90 degrees. All the angles in an acute triangle are less than 90 degrees. Knowing the different types of triangles is important when solving proofs.