# Quadrilateral Angles

## Grade 7 Math Worksheets

A quadrilateral is made up of two triangles and sum of interior angles in a triangle add to 180°. So, sum of two triangles add to 360°, which means sum of interior angles in a quadrilateral is 360°.

Quadrilateral is a 4-sided two-dimensional closed figure.

### Schedule a Free session to clear worksheet doubts

*No credit card required, no obligation to purchase. *

*Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!*

**Rectangle**

- Each angle in a rectangle is a right angle (90°).
- Opposite sides are of equal length and parallel to each other.

**Square**

- Each angle in a square is a right angle (90°).
- All sides in a square are of equal length.
- Opposite sides are parallel to each other.

**Parallelogram**

- Opposite sides in a parallelogram are parallel and equal in length.
- Opposite angles are also equal.

**Trapezoid**

Pair of opposite sides in a trapezoid is parallel.

When the sides other than the parallel sides are equal to each other, then the trapezoid is called isosceles trapezoid. Also, the base angles in an isosceles trapezoid are equal to each other.

**Rhombus**

All sides in a rhombus are of equal length.°

Opposite sides and angles are equal (like in a parallelogram).

*Example:* If 104°, 42°, and 65° are the three measures of a quadrialteral, then what is the measure of fourth angle?

The sum of angles in a quadrilateral is 360°.

Measure of given three angles = 104° + 42° + 65° = 211°

Measure of fourth angle = 360° – 211° = **149****°**

**Check Point**

1. What is the measure of angle *C in the given parallelogram ABCD*?

2. *PQRS* is an isosceles trapezoid. What is the measure of angle *D*?

3. Find the measure of angle *R* in given rhombus, *PQRS*.

5. If an angle in a parallelogram measures 130°, then what is the measure of angle opposite to it?

##### Answer key

- 54°
- 119°
- 57°
- 141°
- 130°

## Personalized Online Tutoring

eTutorWorld offers affordable one-on-one live tutoring over the web for Grades 2-12, Test Prep help for Standardized tests like SCAT, CogAT, SSAT, SAT, ACT, ISEE and AP. You may schedule online tutoring lessons at your personal scheduled times, all with a Money-Back Guarantee. The first one-on-one online tutoring lesson is always FREE, no purchase obligation, no credit card required.

For answers/solutions to any question or to learn concepts, take a **FREE Demo Session**.

*No credit card required, no obligation to purchase. *

*Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!*

## Pricing for Online Tutoring

Tutoring Package | Validity | Grade (1-12), College |
---|---|---|

5 sessions | 1 Month | $139 |

1 session | 1 Month | $28 |

10 sessions | 3 months | $269 |

15 sessions | 3 months | $399 |

20 sessions | 4 months | $499 |

50 sessions | 6 months | $1189 |

100 sessions | 12 months | $2249 |

## IN THE NEWS

Our mission is to provide high quality online tutoring services, using state of the art Internet technology, to school students worldwide.

**Online test prep and practice**

SCAT

CogAT

SSAT

ISEE

PSAT

SAT

ACT

AP Exam

**Science Tutoring**

Physics Tutoring

Chemistry Tutoring

Biology Tutoring

**Math Tutoring**

Pre-Algebra Tutoring

Algebra Tutoring

Pre Calculus Tutoring

Calculus Tutoring

Geometry Tutoring

Trigonometry Tutoring

Statistics Tutoring

**Quick links**

Free Worksheets

Fact sheet

Sales Partner Opportunities

Parents

Passive Fundraising

Virtual Fundraising

Our Expert Tutors

Safe and Secure Tutoring

Interactive Online Tutoring

After School Tutoring

Elementary School Tutoring

Middle School Tutoring

High School Tutoring

Home Work Help

Math Tutors New York City

Press

©2022 eTutorWorld Terms of use Privacy Policy Site by Little Red Bird

©2022 eTutorWorld

Terms of use

Privacy Policy

Site by Little Red Bird