How do i solve the question above without a calculator and please explain

use a mathematical calculator. It does those one with the signs. But if you cant just use brainingcamp they have manipulatives you can use on the website.

(please give brainliest)

Step-by-step explanation:

How many triangles can you construct given three angle measures whose sum is 180°? The sum of theangle measures of any triangle is 180°. You can use a protractor to construct a triangle given threeangle measures. 90 90. 80 100. 70 110. 60. 120. 50. 130. 40. 140. 30. 150. 20. 160. 10. 170. 0. 180. 100.80. 110 70. 12.