Triangle Properties and Angle Measures

Triangle Properties and Angle Measures

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains how to find the value of angle X in a square ABCD with an inscribed triangle NMC. The instructor uses properties of squares and triangles, including angle sum properties and congruence theorems (AAA and SAS), to solve the problem. The process involves calculating angles in various triangles, constructing a line segment, and proving congruence between triangles to determine that angle X is 65 degrees.

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23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the shape of ABCD?

Rectangle

Square

Triangle

Circle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of interior angles in a triangle?

360 degrees

90 degrees

180 degrees

270 degrees

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If one angle in triangle NDC is 90 degrees and another is 70 degrees, what is the third angle?

40 degrees

30 degrees

20 degrees

50 degrees

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the measure of angle C in the square ABCD?

120 degrees

90 degrees

60 degrees

45 degrees

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do the angles 20, 45, and the unknown angle in angle C sum up?

60 degrees

90 degrees

120 degrees

180 degrees

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the measure of the unknown angle in angle C?

15 degrees

20 degrees

25 degrees

30 degrees

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the measure of angle B in triangle MBC?

45 degrees

60 degrees

90 degrees

120 degrees

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