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Vocabulary
Triangles
Angle Relationships
Algebra Attack
Angles in Polygons
100
Any line that intersects two or more parallel lines.
What is a transversal?
100
The sum of the interior angles of a triangle
What is 180°?
100

The measure of a second angle if the measure of the first angle is 42° and the two angles are congruent.

What is 42?

100
If a transversal cuts two parallel lines, how many angle measures do you need to know to figure out all 8 angle measures in the figure.
What is 1?
100

The sum of the interior angle measures of a pentagon.

What is 540º?


200

Two angles whose measures add up to 90°

What are complementary angles?

200

The measure of the third angle of a triangle if one angle of a right triangle is 23°.

What is 57°.

200

The names of two angles outside a pair of parallel lines and on opposite sides of the transversal.

What are Alternate Exterior Angles?

200

The value of x if these two angles are congruent: 

m<1 = (2x + 10)° and 

m<2 = (5x - 20)°

What is 30?

200

The sum of the interior angle measures of a polygon with 22 sides.

What is 3600?

300

When 2 parallel lines are both intersected by a transversal, these angles occupy the same relative position on each parallel line.

What are Corresponding Angles?

300

The measure of an exterior angle if the two nonadjacent interior angles are 35° and 60°.

What is 95º?


300

The measure of an angle if its supplement is 112.

What is 68?

300

If one angle's measure is (4x-6)° and its supplement is 122°, what is the value of x?

What is 16?

300

An octagon has ____ total angles and the same total interior degrees as ___ triangles.

What is 8 (total angles) and 6 (triangles)?

400
Congruent angles formed by two intersecting lines
What are Vertical Angles?
400

The type of triangle that ABC is if
m>A = 30° and m>B = 60°

What is a right triangle?

400

Find an angle if its complement is 37°.

What is 53º?

400

Find x AND the value of 3x if one alternate exterior angle is 150° and the other is 3x°.

What is x=50 and 3x= 150°?

400

The measure of each interior angle in a regular decagon.

What is 144?

500

When 2 parallel lines are both intersected by a transversal these angles are inside of the two parallel lines and on opposite sides of the transversal.

What are Alternate Interior Angles?

500

The value of x if 3 angles in a triangle are 75°,
 (3x + 7)° and (2x - 2)°.

What is 20?

500

If 2 angles in one triangle are congruent to 2 angles in another triangle, we know these two things:

Their third angles are also congruent, and the triangles are similar.

500

The angle of x AND each angle measure, if two corresponding angles are (8x-35)° and (2x-5)°.

What is x=5 and each angle = 5°?

500

A polygon has 7 sides. The interior angle measures are 127º, 129º, 126º, 135º, 136º, 122º and xº. Find the value of x.

What is 125º?