What is the size of angle ABC to the nearest degree?

By subtracting the sum of the two known angles from 180, we can find the measure of the unknown angle. In this example, the size of angle ABC is 105 degrees. 105 degrees To find the size of angle ABC, use the formula 180 - (A + B) = C. A = 30 degrees B = 45 degrees Therefore, C = 180 - (30 + 45) = 105 degrees Therefore, the size of angle ABC is 105 degrees to the nearest degree. To find the size of angle ABC, use the formula 180 - (A + B) = C. In this case, A = 30 degrees and B = 45 degrees. Therefore, C = 180 - (30 + 45) = 105 degrees. The size of angle ABC is then 105 degrees, rounded to the nearest degree. This can be useful when trying to calculate the measure of an angle in a triangle. Knowing the measure of the other two angles, you can use this formula to find the measure of the third angle. By subtracting the sum of the two known angles from 180, we can find the measure of the unknown angle. In this example, the size of angle ABC is 105 degrees. Learn more about angle here brainly.com/question/28451077 #SPJ4

The size of angle ABC to the nearest degree is 160°. 1) To find the measure of angle ABC, we can see that it is supplementary to angle CBD. Therefore, we have: m∠ABC + m∠CBD = 180° 2) We are given that m∠CBD = 20°, we substitute to find m∠ABC: m∠ABC = 180° - m∠CBD m∠ABC = 180° - 20° m∠ABC = 160° Therefore, the measure of angle ABC to the nearest degree is 160°. Here is a step-by-step calculation of how to find the measure of angle ABC: 1) Identify that angle ABC is supplementary to angle CBD. 2) Remember that supplementary angles add up to 180 degrees. 3) Substitute the given measure of angle CBD (20 degrees) into the equation for supplementary angles. 4) Subtract the measure of angle CBD from 180 degrees to find the measure of angle ABC. 5) Round the measure of angle ABC to the nearest degree. The answer is 160°. Complete and correct question: What is the size of angle ABC to the nearest degree?