The sum of the angles in a triangle is always 180 degrees.
From the diagram, we can see that angle a is adjacent to a right angle, so it is complementary to the 70 degree angle.
Therefore, angle a = 90 - 70 = 20 degrees.
Use the image Angela question use the triangle angle some THEOREN, to find the major of angle a for the triangle in the diagram
70
180
19
55
1 answer
1 answer