Exploring Parallel Lines and Triangle Angle Relationships

What is the I Can statement for this section?

• I can solve problems using the measures of interior and exterior angles of a triangle.

• I can identify parallel lines.

• I can calculate the area of a triangle.

• I can find the length of a side in a right triangle.

What is the sum of the interior angles of a triangle?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

If two angles in a triangle are 50 degrees and 60 degrees, what is the measure of the third angle?

• 100 degrees

• 90 degrees

• 80 degrees

• 70 degrees

Given a triangle with angles 35 degrees, 96 degrees, and x, what is the value of x?

• 55 degrees

• 51 degrees

• 45 degrees

• 49 degrees

In a triangle, if one angle is 77 degrees and another is 84 degrees, what is the measure of the third angle?

• 19 degrees

• 49 degrees

• 39 degrees

• 29 degrees

What is the measure of an unknown angle if it forms a straight line with a 96-degree angle?

• 84 degrees

• 86 degrees

• 88 degrees

• 90 degrees

What is the value of x if it is an exterior angle formed by a 69-degree interior angle?

• 113 degrees

• 111 degrees

• 109 degrees

• 101 degrees

What is the Triangle Exterior Angle Theorem?

• The exterior angle is equal to the sum of all interior angles.

• The exterior angle is equal to the sum of the two remote interior angles.

• The exterior angle is equal to the difference of the two remote interior angles.

• The exterior angle is equal to the product of the two remote interior angles.

If the two remote interior angles of a triangle are 54 degrees and 57 degrees, what is the measure of the exterior angle?

• 109 degrees

• 115 degrees

• 111 degrees

• 113 degrees

If the exterior angle of a triangle is 104 degrees and one remote interior angle is 49 degrees, what is the measure of the other remote interior angle?

• 61 degrees

• 55 degrees

• 57 degrees

• 59 degrees