Finding Missing Angles in Quadrilaterals

Finding Missing Angles in Quadrilaterals

Assessment

Interactive Video

Mathematics

6th - 7th Grade

Practice Problem

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains how to find a missing angle in a quadrilateral. It begins by stating that the sum of angles in a quadrilateral is 360 degrees. An example is provided with three known angles: 100, 60, and 70 degrees. The tutorial demonstrates how to calculate the missing angle by subtracting the sum of the known angles from 360 degrees, resulting in the missing angle being 130 degrees.

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total sum of internal angles in a quadrilateral?

360 degrees

270 degrees

450 degrees

180 degrees

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of angles in any quadrilateral?

360 degrees

180 degrees

270 degrees

450 degrees

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the given example, what are the known angles of the quadrilateral?

100, 60, 70 degrees

90, 60, 80 degrees

100, 50, 70 degrees

110, 60, 70 degrees

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you express the sum of angles in a quadrilateral with one unknown angle x?

x + 60 + 100 + 70 = 180

x + 60 + 100 + 70 = 450

x + 60 + 100 + 70 = 270

x + 60 + 100 + 70 = 360

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of the known angles in the example problem?

230 degrees

240 degrees

250 degrees

260 degrees

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example, what is the sum of the three known angles?

230 degrees

260 degrees

240 degrees

250 degrees

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation used to find the missing angle x?

x = 360 - 260

x = 360 - 240

x = 360 - 230

x = 360 - 250

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