Question

Help

Answer 1

Use this theorem SAS Similarity Theorem. Notice the two sides of triangle TRS are proportional to the two sides of triangle TPQ. Next you notice that the included angle of these sides is the same. Therefore, similar.

Let me know if you got it :)

Answer 2

So I am correct?

Answer 3

Yup :D

Answer 4

yes it is correct

Answer 5

First you have to apply Pythagorean theorem .. you have 3 sides then 3 combination try all of them first to be sure if it is right-angled triangle or not then see if it obtuse or acute , but first lets get through steps

Answer 6

a right triangle is exactly 90 degrees
acute triangle is < 90 degrees
obtuse tirangle > 90 degrees

Answer 7

ok :)

Answer 8

Sorry I will re answer :D

Answer 9

Take your time. :-)

Answer 10

1) 80 & 89
\[\sqrt{80^2 + 89^2} \neq 39\]
2) 89 & 39
\[\sqrt{89^2+39^2} \neq 80\]
3) 80 & 39
\[\sqrt{80^2 + 39^2} = 89\]

So this is a right-angled triangle :)

Answer 11

How? A right -angled triangle would have a 90 degree with it...

Answer 12

And you know that for a right-angled triangle Pythagorean theorem is applicable ?
So why not using this fact to solve ! :D
Any way you can draw them like this and get Ur calculator and some coffee then do Ur calculations for each angle