To classify a triangle an <u>isosceles right triangle</u>, it must have:
(1) Two equal sides
(2) Two equal angles
(3) A 90° angle
If we look at the given triangle, we can clearly see that:
The measure of <u>TU</u> is equivalent to <u>TV</u> [Satisfies (1)]
We can also see a <u>Right angle</u> [Satisfies (3)]
Two <u>45° angles</u> in the triangle [(Satisfies (2)]
Since this triangle satisfies all the properties of an <u>isosceles triangle</u>, this triangle can be classified as an <u>isosceles right triangle.</u>