Midterm Review Flashcardizz

Front

What is the Exterior Angle Theorem?

Back

The Exterior Angle Theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

How do you rotate a point 90° counterclockwise about the origin?

Back

To rotate a point (x, y) 90° counterclockwise about the origin, the new coordinates will be (-y, x).

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.

Front

What does it mean to read a composition from Right to Left?

Back

Reading from Right to Left means starting from the right side of the page and moving towards the left, which is common in certain languages and styles of writing.

Front

What is the SAS Postulate in triangle congruence?

Back

The SAS (Side-Angle-Side) Postulate states that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, then the two triangles are congruent.

Front

What is the result of rotating the point (2, 3) 90° counterclockwise?

Back

The result is the point (-3, 2).

Front

How do you find the area of a triangle with base (x + 2) and height (2x - 1)?

Back

Area = 1/2 * (x + 2) * (2x - 1) = x^2 + (3/2)x - 1.

Front

What is the AAS Postulate in triangle congruence?

Back

The AAS (Angle-Angle-Side) Postulate states that if two angles and a non-included side of one triangle are equal to two angles and the corresponding non-included side of another triangle, then the triangles are congruent.

Front

What is the definition of congruent triangles?

Back

Congruent triangles are triangles that are identical in shape and size, meaning their corresponding sides and angles are equal.

Front

What is the formula for the area of a triangle in terms of its sides?

Back

The area can also be calculated using Heron's formula: Area = √[s(s-a)(s-b)(s-c)], where s is the semi-perimeter (s = (a+b+c)/2) and a, b, c are the lengths of the sides.