What type of triangle is a 45-45-90 right triangle?

equilateral
isosceles
scalene
acute

Option B

Step-by-step explanation:

Given : Triangle is a 45-45-90 right triangle.

To find : Which type of triangle is given?

Solution :

A) Equilateral  triangle - Three equal angles

B) Isosceles  - Two equal angles

C) Scalene  - No equal angle

D) Acute - All three angles are less than 90°

According to given situation,

The two angles are 45° and third is 90°

So, the triangle formed by these angle is an isosceles triangle

Therefore, Option B is correct.

4sqrt5

step-by-step explanation:

the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.