Question

Знайти третій кут трикутника, якщо його крути дорівнюють 20° і 90°на кр надо​

Answer 1

Третій кут трикутника дорівнюють 70°

Answer 2

20+90= 110*
180-110=70*
відповідь 70 *

Answer 3

Finding the Third Angle of a Triangle

To find the third angle of a triangle when two of its angles are 20° and 90°, we can use the fact that the sum of all the angles in a triangle is always 180°.

Step 1: Calculate the sum of the given angles. - The sum of the given angles is 20° + 90°.

Step 2: Find the third angle. - Subtract the sum of the given angles from 180° to find the measure of the third angle.

Step 3: Calculate the third angle. - Third angle = 180° - (20° + 90°)

Therefore, the third angle of the triangle can be calculated as follows:

Third angle = 180° - (20° + 90°)

Calculation

Using the given values: ```plaintext Third angle = 180° - (20° + 90°) Third angle = 180° - 110° Third angle = 70° ``` The third angle of the triangle is 70°.