Triangles and Polygons

Classifying Triangles

100

No Equal Sides or Angles

What is Scalene

200

Two equal sides and angles

What is Isosceles

300

All sides and angles are equal.

What is Equilateral

400

Has an angle whose measurement is greater then 90 degrees.

What is Obtuse

500

All angles measure less then 90 degrees.

What is acute.

Angles, Angles, & Angles

100

Number of angles in a triangle.

What is 3 angles

200

The value of all three angles in a triangle added together.

What is 180 degrees

300

When two lines intersect the opposite angles are equal to each other.

What is vertical angles

400

The little box in the corner of a triangle.

What is 90 degrees.

500

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

What is Exterior Angle Theorem

SSS, SAS, ASA, & AAS Congruence

100

Side Side Side

What is SSS

200

If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then these two triangles are congruent.

What is SAS

300

If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then these two triangles are congruent.

What is ASA

400

If two angles and the non-included side one triangle are congruent to two angles and the non-included angle of another triangle, then these two triangles are congruent.

What is AAS

500

If three sides of one triangle are congruent to three sides of another triangle, then these two triangles are congruent.

What is SSS

Interior/exterior angles

100

The formula for the sum of the interior angles of a polygon with n sides is...

180(n-2)

200

The sum of the interior angles of a nonagon is...

What is 1260 degrees?

300

The equation for the exterior angles of polygons is...

What is 360/n?

400

The measure of each exterior angle of a regular 7-sided figure is......

What is 51.43 degrees?

500

The sum of the exterior angles on any polygon is...

What is 360 degrees?

Sides of a polygon

100

The formula for the sum of number of sides of a polygon when the total interior angles is know is...

What is (n-2)180/n?

200

There are _______ sides if each interior angle measures 135 degrees.

What is 8 sides?

300

If each exterior angle measures 40 degrees the polygon has this many sides....

What is 9 sides.

400

If the sum of the interior angles of a polygon equals 720 degrees the polygon has this many sides.

What 6?

500

There are _______ sides if each interior angle measures 172.8 degrees.

What is 50 sides?