# 6.7: Study Guide

**At Grade**Created by: CK-12

Keywords: Define, write theorems, and/or draw a diagram for each word below.

\begin{align*}1^{st}\end{align*}**Section: Angles in Polygons**

Polygon Sum Formula

Equiangular Polygon Formula

Regular Polygon

Exterior Angle Sum Theorem

**Homework:**

\begin{align*}2^{nd}\end{align*}**Section: Properties of Parallelograms**

Parallelogram

Opposite Sides Theorem

Opposite Angles Theorem

Consecutive Angles Theorem

Parallelogram Diagonals Theorem

**Homework:**

\begin{align*}3^{rd}\end{align*}**Section: Proving Quadrilaterals are Parallelograms**

Opposite Sides Theorem Converse

Opposite Angles Theorem Converse

Consecutive Angles Theorem Converse

Parallelogram Diagonals Theorem Converse

Theorem 6-10

**Homework:**

\begin{align*}4^{th}\end{align*}**Section: Rectangles, Rhombuses, and Squares**

Rectangle Theorem

Rhombus Theorem

Square Theorem

Theorem 6-14

Theorem 6-15

Theorem 6-16

**Homework:**

\begin{align*}5^{th}\end{align*}**Section: Trapezoids and Kites**

Trapezoid

Isosceles Trapezoid

Theorem 6-17

Theorem 6-17 Converse

Isosceles Trapezoid Diagonals Theorem

Midsegment (of a trapezoid)

Midsegment Theorem

Kite

Theorem 6-21

Theorem 6-22

Kite Diagonals Theorem

**Homework:**

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