VOCAB
TRIANGLES
CONSTRUCTIONS
TRANSVERSALS
ALGEBRA
100

This type of triangle has all equal sides and equal angles

EQUILATERAL TRIANGLE

100

All angles of a triangle add up to _______ degrees.

180

100

What tools do you need to make a construction?

Ruler and compass.

100
What is the relationship between same side interior angles?

Same side interior angles are complimentary.

100

Solve for x: 47 + 92 + x = 180

x = 41

200

Fill in the blanks: 

Complementary angles are equal to ____ degrees.

Supplementary angles are equal to ____ degrees.

Complementary angles are equal to 90 degrees.

Supplementary angles are equal to 180 degrees.

200

What is true about isosceles tiangles?

They have two equal sides and therefore, two equal angles. 

200

What does a bisector do?

Cuts something (angle or line) into two equal halves. 

200

What is the relationship between corresponding angles?

Corresponding angles are equal to each other.

200

Solve for a:  a + 24 + a = 90

a = 33

300

This "third" parallel line helps solve for unknown angles.

AUXILLARY LINE

300

What is the angle measure of an equilateral triangle?

60 degrees

300

Using your compass and a straight edge, construct a perpendicular bisector to this line segment.



300

Solve for a, b, and c.


a = 53

b = 53

c = 117

300

Solve for x

x = 85

400

What are two angles that have the same vertex and share a side in common (angles that are next to each other)?

Adjacent Angles

400

Solve for x.


x = 120

400

Starting from this line segment, use your compass and straight edge to construct an equilateral triangle.



400

What is the relationship between alternate interior angles?

Congruent

400

Solve for x.

x = 14

500

The exterior angle theorem states that the exterior angle of a triangle equals the sum of what?

The two opposite interior angles.

500

Why does the exterior angle theorem make sense?

The total sum of a triangle is 180.  The total sum on a line equals 180.  

500

Using your compass and straight edge, construct an angle bisector.


500

What is the relationship between alternate exterior angles?

Congruent

500

Solve for x and y. 


x = 30 

y = 90

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