Finding the Missing Angle and Perimeter of Triangles

The sum of the sides of a triangle is 180°

• TRUE

• FALSE

Answer explanation

The sum of the interiror ANGLES of a triangle is 180°

Tags

CCSS.8.G.A.5

If the perimeter of an equilateral triangle is 84 feet, then each side measures 28 feet.

• TRUE

• FALSE

Tags

CCSS.3.MD.D.8

Given ΔAVE, if m<A = 90° and m<V = 52°, then m<E = 38°

• TRUE

• FALSE

Tags

CCSS.8.G.A.5

To get the missing side of a scalene triangle, we divide its perimeter by 3.

• TRUE

• FALSE

Tags

CCSS.3.MD.D.8

To solve for the perimeter of an equilateral triangle, we multiply the measurement of one of its sides by 3

• TRUE

• FALSE

Tags

CCSS.3.MD.D.8

Marcela needs to cut a triangle out of cardboard for her project. If each side of the triangle measures 24 cm, what is its perimeter?

• 60 cm
• 72 cm
• 36 cm
• 48 cm

Tags

CCSS.3.MD.D.8

The two sides of a triangular frame measure 11 inches each. What is the measurement of the other side if its perimeter is 32 inches?

• 12 inches
• 8 inches
• 15 inches
• 10 inches

Tags

CCSS.3.MD.D.8

If the two angles of a triangle measure 97° and 46°, what is the equation in solving for the third angle?

• = (180° – 97°) + 46°

• = 180° - (97° - 46°)

• = 180° – (97° + 46°)

Tags

CCSS.8.G.A.5

Which of the following is the correct equation in solving for the perimeter of a triangle with sides measuring 17 m, 26 m and 19 m?

• P = 17 + 26 + 19

• P = 17 + 26 - 19

• P = 17 x 23

Tags

CCSS.3.MD.D.8

Given ΔROD, <R and <O are both equal to 45°. What is the measurement of <D?

• 45°

• 90°

• 180°

Tags

CCSS.8.G.A.5