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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 180°
What are supplementary angles?
200

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

What is 57°.

200
The relationship between <4 and <5?
What are Alternate Interior Angles?
200
The measure of x if 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 position on the top and bottom parallel lines.

What are Corresponding Angles?

300

The measure of <A if m>B = 35° and m>C = 60°.

What is 95º?


300

The measure of <6 if the measure of <8 is 112.

What is 68?

300
If the m<1 is (4x-6)° and the m<8 is 122°, what is the value of x?
What is 32?
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 m<8 if m<2 is 37°.

What is 143º?

400
The measure of <7 AND value of x if the measure of <3 is 150° and the measure of <6 is 3x°.
What is 150° and 50?
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 m>A = 75° and
m>B = (3x + 7)° and m>C = (2x - 2)°.

What is 14?

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 m<8 if the m<4 is (8x+35)° and the m<6 is (2x+5)°.
What is 147°?
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?