HW 2-2

In ΔABC, AB = 12 cm, BC = 7 cm, and AC = 10 cm. Is ΔABC equilateral, isosceles, or scalene?

• Equilateral

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2

In ΔABC, AB = 12 cm, BC = 7 cm, and AC = 10 cm. Which description below best describes ΔABC?

• Acute Triangle

• Right Triangle

• Obtuse Triangle

• Equiangular (Acute) Triangle

Tags

CCSS.4.G.A.2

In ΔMNO, m∠M = 45°, m∠N = 45°, and m∠O = 90°. Is ΔMNO equilateral, isosceles, or scalene?

• Equilateral

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2

In ΔMNO, m∠M = 45°, m∠N = 45°, and m∠O = 90°. Which description below best describes ΔMNO?

• Acute Triangle

• Right Triangle

• Obtuse Triangle

• Equiangular (Acute) Triangle

Tags

CCSS.4.G.A.2

The measure of one of the acute angles in a right triangle is 39°. What is the measure of the other acute angle?

• 39°

• 90°

• 78°

• 51°

Tags

CCSS.8.G.A.5

The measure of two of the interior angles of a triangle is 47° and 75°. What is the measure of the 3^rd interior angle?

• 58°

• 75°

• 47°

• 28°

Tags

CCSS.8.G.A.5

Jay wants to solve for x. Which equation should he use to correctly get the value of x?

• (20x – 3) + (11x – 1) + 151 = 180

• 20x – 3 = 11x – 1

• (20x – 3) + (11x – 1) = 151

• (20x – 3) + (11x – 1) = 29

Tags

CCSS.7.G.B.5

What is the value of x?

• 5

• 5.9

• 1.1

• 0.2

Tags

CCSS.7.G.B.5

To solve for x, Fabian starts with the equation 10x + 15 = 14x – 13. Which statement below correctly describes Fabian’s mistake?

• Fabian should have started with the equation (4x + 13) + (6x + 2) + (14x – 13) = 180.

• Fabian should have started with the equation (6x + 2) – (4x + 13) = (14x – 13)

• Fabian should have started with the equation (4x – 13) – (6x + 2) = (14x – 13)

• Fabian started with the correct equation.

Tags

CCSS.8.G.A.5

Joanna does not remember the Exterior Angle Theorem. However, she does remember the Triangle Angle Sum Theorem. Which expression should Joanna write in the blank to complete the equation?

(4x + 13) + (6x + 2) + ___________ = 180°

• 180 – (14x – 13)

• 14x – 13

• (14x – 13) – (6x + 2)

• (14x – 13) – (4x + 13)

Tags

CCSS.8.G.A.5