What's the correct name for this triangle below

Is a right triangle

Step-by-step explanation:

we know that

A right triangle is a triangle that has an angle of

In this problem the only information available is that the triangle has a right angle,

therefore

Is a right triangle

A. Right triangle.

Step-by-step explanation:

We have been given an image of a triangle and we are asked to determine the type of our given triangle.

We can see from our provided triangle that one of its angle measures 90 degrees, therefore, our given triangle is a right triangle and option A is the correct choice.

Since we have been not given any information about any sides or angles except a right triangle, therefore, we can not tell about other choices.

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21