You are watching: What is the measure of the missing angle?

**Let"s take it a look at at part examples.Example #1:**

**Determine the measure of edge x.Step 1:**add together the recognized angles.

**68° + 47° = 115°Step 2:**Subtract the sum from 180°.

**180° - 115° = 65°The measure up of angle x is 65°.Example #2:**

**Determine the measure of angle y.Notice the this triangle has a ideal angle in the bottom left corner. This angle measures 90°.Step 1:**add the measure up of the given angles together.

**52° + 90° = 142°Step 2:**Subtract the amount from 180°.

**180° - 142° = 38°The third angle actions 38°.Example 3:Determine the measure of angle m.Notice the this triangle is isosceles. That method that not just are 2 of the sides equal but two of the angles are additionally equal. The solution to this trouble will it is in slightly various than the systems to the others.Step 1:**Subtract the know angle indigenous 180°.

**180° - 26° = 154°Step 2:**divide the distinction by 2 to gain the measure of each angle.

**154° ÷ 2 = 77°Each edge m steps 77°.Example 4:Determine the measure up of edge h. Notice that this triangle gives an angle exterior of the triangle. There are a couple of various ways you deserve to use this info to recognize the measure of angle h.Here is one method:Step 1:**determine the measure up of the angle surrounding to 148°.

**The 2 angles do a straight line and therefore have a amount of 180°.180° - 148° = 32°Step 2:**include together the two well-known angles within the triangle.

**56° + 32° = 88°Step 3:**Subtract the amount from 180°.

**180° - 88° = 92°The measure of edge h is 92°.**

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**To determine to measure up of the unknown angle, be sure to use the full sum that 180°. If two angles room given, include them together and then subtract native 180°.If 2 angles are the same and unknown, subtract the known angle indigenous 180° and also then divide by 2.**

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