8.2 Polygons

Question 1

Polygon

Answer 1

A closed figure in a plane determined by three or more straight line segments

Question 2

Regular polygon

Answer 2

Has all sides of the same length and all angles of the same measure

Question 3

Triangle sum theorem

Answer 3

The sum of the measures of the interior angles in a triangle is 180°

Question 4

How do you determine the sum of the measures of the interior angles in any polygon?

Answer 4

(n - 2) x 180
N being the number of sides

Question 5

Acute triangle

Answer 5

All angles in triangle are acute

Question 6

Obtuse triangle

Answer 6

One angle is obstuse

Question 7

Right triangle

Answer 7

One angle is a right angle

Question 8

Isoceles triangle

Answer 8

Two equal sides, two equal angles

Question 9

Equilateral triangle

Answer 9

Three equal sides; three 60° angles

Question 10

Scalene triangle

Answer 10

No two sides are equal in length; no two angles are equal in measure

Question 11

Similar (~)

Answer 11

Two figures are similar if their corresponding angles have the same measure and the lengths of their corresponding sides are in proportion

Question 12

Congruent (equal sign with tilde over it)

Answer 12

Congruent figures are similar figures that have the same corresponding side lengths (equal side; equal angles)

Question 13

Quadrilaterals

Answer 13

4 sided polygons, sum of the interior is 360°

Question 14

Trapezoid

Answer 14

Two sides are parellel

Question 15

Parallelogram

Answer 15

Both pairs of opposite sides are parallel and equal in length

Question 16

Rhombus

Answer 16

Both pairs of opposite sides are parellel; all 4 sides are equal in length

Question 17

Rectangle

Answer 17

Both pairs of opposite sides are parellel and equal in length; all angles are right angles

Question 18

Square

Answer 18

Both pairs of opposite sides are parellel; all four sides are equal in length; all the angles are right angles