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 .
Some triangles will have one angle that is exactly 90 degrees. Those are right triangles because one angle is 90 degrees. (The other two angles must be acute because they must add up to 90 degrees.) Some triangles will have one angle that is more than 90 degrees. Those are obtuse triangles because one angle is obtuse. (The other two angles are acute because the sum of the other two triangles is less than 90 degrees). Some triangles will have all three angles less than 90 degrees. Those are the acute triangles. Go ahead, start with a right triangle.