The measure of the missing angle in triangle 1 is 58°.
The measure of the missing angle in triangle 2 is 50°.
The measure of the missing angle in triangle 3 is 30°.
The measure of the missing angle in triangle 4 is 45°.
The measure of the missing angle in triangle 5 is 137°.
The measure of the missing angle in triangle 6 is 135°.
<h3>Descriptions of triangles. </h3>
A triangle is a three-sided polygon with three edges and three vertices. the sum of angles in a triangle is 180 degrees.
Types of triangles
- Equilateral triangle
- Isosceles triangle
- Right-angles triangle
- Measure of the missing angle in triangle 1 = 180 - (65 + 57) = 58°
- Measure of the missing angle in triangle 2 = 180 - (90 + 40) = 50°
- Measure of the missing angle in triangle 3 = 180 - (130 + 20) = 30°
- Measure of the missing angle in triangle 4 = 180 - (85 + 50) = 45°
- Measure of the missing angle in triangle 5 is 137°. This is because interior angles are equal.
- Measure of the missing angle in triangle 6 = (100 + 35) = 135°. This is because the sum of the two interior angles are equal to the opposite external angle.
To learn more about triangles, please check: brainly.com/question/9329354
