Flashcard: 4a.1 - 4a.4

Front

If ∆ABC is equilateral, what is the measure of each angle?

Back

Each angle in an equilateral triangle measures 60°.

Tags

CCSS.8.G.A.5

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is 180°.

Tags

CCSS.8.G.A.5

Front

In triangle BCD, if BC ≅ BD, what can be said about angles B and D?

Back

Angles B and D are congruent.

Tags

CCSS.8.G.B.8

Front

If m∠B = 13x – 35 and m∠C = 5x – 19, how do you find the value of x?

Back

Set up the equation 13x - 35 + 5x - 19 + m∠D = 180° and solve for x.

Tags

CCSS.7.G.B.5

Front

What is the measure of angle 2 if it is given as 50°?

Back

Angle 2 measures 50°.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

Solve for x: 13x - 35 = 180.

Back

x = 16.5.

Tags

CCSS.7.EE.B.4A

Front

What is the measure of angle b if it is given as 36°?

Back

Angle b measures 36°.

Tags

CCSS.4.MD.C.6

Front

In triangle BCD, if m∠D = 2x + 14, how do you express m∠C in terms of x?

Back

m∠C = 180° - (13x - 35 + 2x + 14).

Tags

CCSS.8.G.A.5

Front

What is the relationship between the angles in an isosceles triangle?

Back

In an isosceles triangle, the angles opposite the equal sides are congruent.

Tags

CCSS.8.G.A.5

Front

If m∠C = 5x - 19, how do you find m∠C when x = 5?

Back

m∠C = 5(5) - 19 = 6°.

Tags

CCSS.7.G.B.5